Twitter, the microblogging service, is gradually evolving its design on end user profile pages, and the CSS code may contain more clues.

20090316 ntsqsnd4pcx9p5ayi45mbntui3 Twitter introduces advertising on profile pages    
20090316 8uate1xm1au7aqpqjq8ng9etic Twitter introduces advertising on profile pages

At the moment, the advertising placed on the pages is ‘internal advertising’ for Twitter services like Search, and its Widgets, but in the future – well, they are short, unobtrusive and perhaps easily able to adapt themselves to fit your tweeting style?

TweetSense advertising? Makes perfect sense to me. What do you think?