Twitter CEO leaves company

- Operational director Adam Bain Twitter is leaving the company. That made Bain said Wednesday on Twitter. He indicated '' to be a new challenge. ''

Bain worked for six years at Twitter and social networking helped grow into a billion dollar company. His departure is yet another of a key manager at Twitter.

Twitter is reportedly looking at a takeover candidate, but the last time it failed to find a company that wanted to make a bid.