Large user base; proven and useful technology. Most Skype users find a value in it (I do think there's more money to make than what has been made so far). In th

Large user base; proven and useful technology. Most Skype users find a value in it (I do think there's more money to make than what has been made so far). In the end it's a technology that could help brighten Microsoft's image. If they manage to integrate it gracefuly in their office & collaboration stack, without ruining it as a standalone product, it may very well be a winner for them. Indeed the challenges are huge but I believe this is the right time for challenges at Microsoft.