Dick Costolo is now Twitter CEO

Dick Costolo became Twitter’s new CEO.

“This is why I have decided to ask our COO, Dick Costolo, to become ’s CEO. Starting today, I’ll be completely focused on product strategy.” ~ Evan Williams

“Our #newtwitter was designed to be easier, faster, and richer but our #newtwitterceo is faster, older, and balder!” ~ Biz Stone