Need a Twitter API based site. Basically search twitter for "keyword" related tweets and post them on our site. Place advertising(adbrite, adsense, kontera, etc.) RSS feeds, top tweeters (on our site), latest tweeters (who join our site) on the side bars.
Backend to have a functionality for admin to schedule tweets, that would get tweeted to multiple twitter accounts and also on this new website.
Only respond with API based examples. I do not want to know ALL the work you may have done or how big your team is.