The Social Bookmarks plugin for WordPress supports more than 50 sites out-of-the-box. The complete listing of these sites is included below. Moreover, the list of supported sites is greatly increased with the use of the Site Packs that allow anyone to create and distribute their list of supported sites. All the Site Packs simply expand the default list of compatible sites.

Note that I have simply copied & pasted the description of each site that I could dig out from their about page and this page should be never be considered as a review of the mentioned sites. The listing appears in alphabetical order.

Supported Sites

BlinkList

BlinkList is a powerful productivity tool that makes is much easier for anyone to share and save their links for later.

Bloglines

Bloglines is a FREE online service for searching, subscribing, creating and sharing news feeds, blogs and rich web content. With Bloglines, there is no software to download or install — simply register as a new user and you can instantly begin accessing your account any time, from any computer or mobile device.

Blogmarks

BlogMarks is a collaborative link management project based on sharing and key-word tagging. Build on a blog basis, BlogMarks is an open and free technology. Now, you can access your favorite URL’s from any computer. And with BlogMarks, you share your favourite with other users.

Buzz – Yahoo

The buzz can be about anything – a great story on a major news site, an extraordinary bit from an obscure site, an intriguing video, or a fantastic blog that shouldn’t be missed. Instead of editors, people like you determine the top-rated stories. Stories with most Buzz may be published on the Yahoo! home page – you can impact what millions will see on Yahoo!

Connotea

Free online reference management for clinicians and scientists. Saving references in Connotea is quick and easy. You do it by saving a link to a web page for the reference, whether that be the PubMed entry, the publisher’s PDF, or even an Amazon product page for a book. Connotea will, wherever possible, recognise the reference and automatically add in the bibliographic information for you.

Del.icio.us

Delicious is a social bookmarking service that allows you to tag, save, manage and share Web pages all in one place. With emphasis on the power of the community, Delicious greatly improves how people discover, remember and share on the Internet.

Diigo

As you read on the web, instead of just bookmarking, you can highlight portions of web pages that are of particular interest to you. You can also attach sticky notes to specific parts of web pages. Unlike most other web “highlighters” that merely clip, Diigo highlights and sticky notes are persistent in the sense that whenever you return to the original web page, you will see your highlights and sticky notes superimposed on the original page, just what you would expect if you highlighted or wrote on a book!

digg

Digg is a place for people to discover and share content from anywhere on the web. From the biggest online destinations to the most obscure blog, Digg surfaces the best stuff as voted on by our users. You won’t find editors at Digg — we’re here to provide a place where people can collectively determine the value of content and we’re changing the way people consume information online. How do we do this? Everything on Digg — from news to videos to images — is submitted by our community (that would be you). Once something is submitted, other people see it and Digg what they like best. If your submission rocks and receives enough Diggs, it is promoted to the front page for the millions of our visitors to see.

DotNetKicks

DotNetKicks.com is a community based news site edited by our members. It specialises in .NET development techniques, technologies and tools including ASP.NET, C#, VB.NET, C++, Visual Studio, SubSonic, Open Source, SQL Server, Silverlight & Mono. Individual users of the site submit and review stories, the most popular of which make it to the homepage. Users are encouraged to ‘kick’ stories that they would like to appear on the homepage. If a story receives enough kicks, it will be promoted.

DZone

DZone is a free link-sharing community for developers. Anyone can submit new links to the incoming queue members vote on upcoming links to determine what gets promoted. Everyone can browse, search and comment on links.

Facebook

Post the link to your Facebook profile or email it to your friends on Facebook.

Fark

Fark.com, the Web site, is a news aggregator and an edited social networking news site. Every day Fark receives 2,000 or so news submissions from its readership.

Faves

Faves.com’s free website delivers recommendations personalized to each user’s topics and people of interest. Through a unique Topic Network, Faves.com users are connected to other members who make the highest quality recommendations in their respective areas of interest. Faves.com is led by an experienced group of entrepreneurs formerly from Microsoft®.

Fleck

All your favourite websites in one place. Your bookmarks are available for you at all times from any computer. Share your bookmarks with friends and within groups.

FriendSite

FriendSite.com brings together the best of Facebook and MySpace. Allows you to get your own URL, create a profile (and add music, images, customize), upload and share photos(with videos coming soon), create and manage groups and evites, share and store bookmarks, create opinion polls, blog, horoscopes, sending SMS, downloading photos to your mobile and more.

Google Bookmarks

Use Web History to find the sites you visit frequently and bookmark your favorites. Use the Google Toolbar for quick access to your bookmarks and to easily create more. No matter where you may be surfing the web, your bookmarks can stay with you just by signing in. Add searchable labels and notes to your bookmarks to find them easily and keep them organized.

Kaboodle

Kaboodle is a social shopping community where people discover, recommend and share products. Kaboodle’s powerful shopping tools allow people to organize their shopping through lists, discover new things from people with similar style, get discounts on popular products and find best prices. At the heart of Kaboodle is a fun and engaging community of people who love to shop. Community members create and join groups, share advice, feedback and product suggestions and personalize their profiles with polls and other widgets.

Maple

Maple.nu uses the social bookmarking format to collectively map and aggregate the Web. Maple.nu’s architecture is based on relevance and user preference. Using the Maple.nu bookmarklets, users store and share their favorites, creating a collective Web compendium of news, resources and sites.

Mister Wong

Mister Wong is Europe’s largest portal of its kind, with over four million visitors per month. The service was founded by Kai Tietjen in March 2006. Though it started in German, Mister Wong is meanwhile available in Russian, Chinese, Spanish, and French. The German version already has over three million linked websites saved by its users.

Netscape

Now it is called Propeller (http://www.propeller.com/)

Netvouz

The idea behind Netvouz is that you should always have access to your bookmarks. Regardless if you are at your computer at home, at work, in school, at a friend’s place or outdoors surfing from your cell phone. By keeping your bookmarks on Netvouz you always have instant access to them, regardless of where you are and which computer you are using! On Netvouz you can also be social and share your bookmarks with other users and, of course, also benefit from other users’ bookmarks. It’s a great way to find new great web sites in your areas of interest!

Newsvine

Newsvine is a community-powered news website which draws content from its users and syndicated content from mainstream sources such as The Associated Press. Users can write articles, seed links to external content, and discuss news items submitted by both users and professional journalists.

PlugIM

PlugIM is a user driven internet marketing community. Submit content, share articles, comment on projects and promote your favorites to the front page.

reddit

reddit is a source for what’s new and popular on the web — personalized for you. Your votes train a filter, so let reddit know what you liked and disliked, because you’ll begin to be recommended links filtered to your tastes. All of the content on reddit is submitted and voted on by users like you.

Shoutwire

Shoutwire is the latest community based internet news website. It allows the community rather than a news editor to submit and review news content on the site.

Simpy

Simpy is a social bookmarking service. With Simpy, you can save, tag and search your own bookmarks and notes or browse and search other users’ links and tags. You can be open and share your links with others, or keep them private.

Simpy also helps you find like-minded people, discover new and interesting sites, publish your bookmarks, detect and eliminate link-rot, etc.

Kirtsy

kirtsy is a social media platform of pure goodness. A plaza for the peachy. A portal to the pretty. A place to find cool things. To read smart scoop. To connect with fab ideas, exceptional people, useful information, excellent products. All of it. And more.

Slashdot Bookmarks

Slashdot Bookmarks exist to give you a quick place to save URLs for later, to share them with the Slashdot Community, and to submit them to the Slashdot Editors for consideration for posting.

After you bookmark a URL, you will have the option to either Submit it directly to the Slashdot submission bin, or better yet, to write a Journal Entry about it. Slashdot Journal Entries can now be automatically submitted to Slashdot editors for mainpage post consideration, so bookmarks are a great way to quickly submit stories.

Sphere

Sphere connects your current articles to contextually relevant content from your archives as well as from Blog Posts, Media Articles, Video, Photos, and Ads from across the Web.

Stumble Upon

StumbleUpon helps you discover and share great websites. As you click  Stumble!, we deliver high-quality pages matched to your personal preferences. These pages have been explicitly recommended by your friends or one of 6 million+ other websurfers with interests similar to you. Rating these sites you like automatically shares them with like-minded people – and helps you discover great sites your friends recommend.

Squidoo

Squidoo is a hand-built collection of nearly 900,000 pages built by people just like you. Squidoo is about giving you a free, easy place to set up a page online. About anything you’re interested in. Squidoo is about finding people when you care what they know instead of who they know.

Spurl

Spurl.net is a free on-line bookmarking service and search engine. It allows you to store and quickly access again all the interesting pages you find on the web from any Internet connected computer. With Spurl.net you will never have to lose a good link again. You can search your links, notes and in fact the entire text of all the pages you’ve ever “spurled”. You can start by uploading the bookmarks from all your computers – after that all your bookmarks will be accessible in one place. And because thousands of other users are using Spurl.net as well, you will discover interesting links through recommendations, hot lists and more.

Technorati

Technorati was founded to help bloggers to succeed by collecting, highlighting, and distributing the online global conversation. As the leading blog search engine and most comprehensive source of information on the blogosphere, we index more than 1.5 million new blog posts in real time and introduce millions of readers to blog and social media content.

ThisNext

ThisNext is a shopcasting network where users can recommend, share and discover great products. We believe that better buying leads to better living. Great products can help us do, be and experience the things that make us happy. Our goal is to help people discover great and deeply gratifying products. Every product on ThisNext is picked by the ThisNext community (That means you!). You can broadcast your recommendations on your blog and social network: We call that shopcasting. When you make a recommendation, you are letting the world know what you think is great and worth spending hard-earned money to buy. You are answering the question “What do you use?” for people who share your interests and style.

Tip’d

Tip’d is a social news site for finance and investing topics. Categories covered include stocks, ETFs, mutual funds, forex, real estate and personal finance. The Tip’d community prides itself on
civil, polite and informed discussion on each story.

Webride

Webride attaches discussion forums to each and every web page – on the fly. Did you stumble across an interesting web page? Start to discuss it with others!

Wists

Wists was created for 2 simple purposes: 1. To make finding well designed, interesting or unusual products and collectibles both simple and fun. 2. To make publishing or sharing lists of recommendations and wishlists easier and more appealing than maintaining a weblog and not tied to one particular store. Using Wists is not like going to Walmart or searching a price comparison shopping site – we try to encourage the discovery and promotion of products from small retailers and manufacturers and young designers.

Yahoo My Web

With My Web, you can save your bookmarks in a place where you can always find them. Share your bookmarks with family, friends and colleagues. Discover new things by browsing what’s popular or interesting to you.