Three months ago we reported that Ads 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. tweetmeme_url = 'http://www.readwriteweb.com/archives/ads_spotted_on_twittercom_-_ [...]