It has been reported that Microsoft could be about to shell out $1bn to acquire Yammer, a social network for businesses.
The idea of the website is to offer secure and private social networks that can be used internally by firms' employees, allowing them to communicate more freely and easily in the hope of increasing productivity.
A basic version is available to groups and companies for free, while the premium version of Yammer costs $15 per user, per month.
According to Bloomberg, sources familiar with the situation have suggested Microsoft could compete a deal to buy Yammer by tomorrow.
A report by the Daily Telegraph newspaper said both firms have declined to comment.
According to Yammer's website it is used by more than 200,000 companies across the world, including staff at Shell, DHL and Capgemini.