We support 200+ services with weekly updates and additions. A sample of supported services:

Facebook, Twitter, LinkedIn, Bit.ly, Goo.gl, Instapaper, Amazon Wish List, Digg, Google Buzz, Google Apps, Google Gmail, Google Notebook, Google Reader, Google Wave, SideWiki, WordPress, Blogger, TypePad, LiveJournal, Posterous, Soup.io, Tumblr, AIM, Yahoo Messenger, Delicious, Google Bookmarks, StumbleUpon, Dwellicious, Bebo, Mister Wong, Evernote, Netvibes, Stumpedia, Twine, Connotea, Diigo, Folkd, Simpy, addthis, Yahoo Mail, Hotmail, Share Button, AOL Mail, Outlook, Eudora, Thunderbird, Mail, Buzzster, Yahoo Buzz, Reddit, Techmeme, YC Hacker News, ShareThis, tweetmeme, Shareholic, SmakNews, Tipd, Care2, Current, Fark, Khabbr, Mixx, NewsTrust, Marginize, NowPublic, Propeller, Slashdot, Boxee, Kaboodle, Sphinn, MySpace, Orkut, Plurk, Identi.ca, Mozillaca, FriendFeed, Hyves, Netlog, Plaxo, Tweetie, Hub.tm, Hubspot, Bit.ly, Is.gd, j.mp, TinyURL, Tr.im, WeHeartIt, Clicky.me, Su.pr, PrintFriendly, Read It Later, Yammer, Google Translate, Box.net, Pinboard