Employers can create separate log-ins for employees to use with their Work accounts, or users can link these up with their other profiles to access everything in one place. The product puts Facebook head-to-head with the likes of Microsoft’s Yammer, Slack, Convo, Socialcast, and a huge number of others who are trying to tackle the “enterprise social network” space. Even LinkedIn conveniently let drop last night that it too was looking at building a product for coworkers to communicate and share content (but not chat, as a LinkedIn spokesperson tells me). Not all of these have been a hit: Lars Rasmussen, the engineering director at Facebook who is heading up the project, had in his past once headed up one of the failed efforts at an enterprise social network, Google Wave. Facebook is positioning today’s debut as a bold first step. “We’re putting the app into the app stores so that we can begin testing the product,” Rasmussen said in an interview. Get the full story at TechCrunch and download Facebook at Work Apple Read also "Facebook where? The enterprise reacts to Facebook at Work" at TechCrunch