Editors Weblog - Twitter: social media becomes just plain media?

“Twitter is not a media company,” said CEO Dick Costolo at the beginning of this year. Yet a number of recent developments have been threatening to prove him wrong. Last week Twitter announced the launch of a #NASCAR hashtag page, where users can “discover the best Tweets, photos and perspectives from NASCAR drivers and their families, crews, commentators, celebrities and fans – all in a single timeline.”