It appears more than a few of the approximately 600 employees currently working at Twitter left the GooglePlex at some point to do so… 13 percent according to a report from AllThingsD.

Among the more notable of Twitter’s 87 ex-Googlers, CEO Dick Costolo, who had a short stint at Google after they purchased his FeedBurner startup, former Senior Product Manager at Google Satya Patel, and their recent acquisition former Products Counsel at the Plex and Head of Music partnerships at YouTube, Glenn Otis Brown.

While the majority of ex-Google employees seem to leave on good terms, one current Twitter staffer, creative director Doug Bowman, explained in a blog post entitled “Goodbye, Google” his frustrations with the working environment and reasons for leaving the company. expand full story