Facebook starts testing long-awaited Work Chat app for businesses

At the start of this year, Facebook revealed that it was developing a work-focused version of its social networking tools to try and convert its consumer success into a new stream of revenue from businesses.On Friday, the company continued that push by quietly launching its new Work Chat app for Android, which lets users message workmates using an interface that's almost identical to Facebook Messenger. Users can send messages to individuals or groups of co-workers, and include cute sticker