Hey there! mentions is using Twitter.

Twitter is a free service that lets you keep in touch with people through the exchange of quick, frequent answers to one simple question: What's happening? Join today to start receiving mentions's tweets.

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I've been replaced. =( http://tinyurl.com/comgwk 4:52 AM Mar 31st from web
Looking for more features? @PowerTwitter FF add-on and @twhirl AIR app include @mentions. Check out a RT button greasemonkey: http://➹.ws/웦 7:27 AM Mar 15th from web
Updated to v0.61 Fixed bug with linking to usernames with underscore characters. http://userscripts.org/scri... 10:12 AM Feb 8th from web
Updated to v0.6: Added favoriting back in @mentions tab. 6:55 AM Feb 3rd from web
@bitfaker updated script to v0.5 Fixed many bugs due to Twitter HTML/JS changes. Thanks @firstclown and @jeffisageek for catching them. 6:22 AM Feb 3rd from web
Greasemonkey script for Twitter by @bitfaker. Adds an @mentions tab to Twitter. http://userscripts.org/scri... 11:48 AM Feb 2nd from web

Name @Mentions
Location MA, USA
Web http://userscript...
Bio Greasemonkey script for Twitter. Adds an @mentions tab. Follow me for updates.