I wanted to do something like this for ages - but I have only finally got around to doing it!
Tweetgain.com is updated daily with Twitter tips, advice, tools, apps and more.
A Little Background
Writing for iDezy, a web worker resource blog, I was inundated with links to Twitter apps and tools. It seems like everyday someone is launching a new Twitter tool. There are already plenty of great places you can go to hear about the latest Twitter apps. I didn't want to just create another app directory - I wanted to build a resouce that covered the entire Twitter experience...and so Tweetgain was born.
ATM you can send your tips via Twitter to my account and if I like em they will be added to the site with a link to your Twitter profile.
Let me know what you think of the site!