Three months ago we reported thatAds Had Come to Twitter and it was a pretty big deal - until Twitter promptly said the word "sponsored" was only appearing on the site in error. Now the "sponsored definitions" of certain Twitter "concepts" have appeared on the site again - and they sure look legit this time.

These first ads probably aren't going to bring in enough cash to fuel a micro-app acquisition spree by Twitter, but this is the first clear public indication of one way the company is bringing in revenue. It's funny - the ads have been live for about a week now and no one but a few small, alert blogs has written about them. It was big news three months ago and we believe it's still important.

Sponsor

So far the only two sponsored links we've seen cycle through our sidebars have been to the ad network Federated Media's Microsoft microsite ExecTweets.com (aggregating Twitter messages from corporate executives) and Universal Studios' CinemaTweets.com, promoting the offensive forthcoming gay-face movie Bruno. The ads only appear on the home page of Twitter