Advertising on Twitter

How will twitterati respond to Twitter's latest initiative, announced at the Cannes Advertising Festival last week?

Promoted tweets in the main stream; promoted trends at the top of the list of the most popular topics of discussion; promoted accounts in a list of recommended users to follow? (FT 23rd June 2011). Will this financially-driven model (revenues from advertising) deliver, or will users feel exploited, and move on?

And if so, where to? Watch this space.