The Facebook app for Windows Phone is certainly serviceable, but it's never really been anything to get excited about. In fact, it wasn't really something you looked forward to using and it's been slow to add the features considered standard on competing mobile platforms. Well, with the soon to land version 2.5, that capability gap will get quite a bit smaller. It hasn't hit the Marketplace yet, but when it does it'll bring support for group chats, threaded messaging, tagging in posts and the ability to like or delete not only posts but comments as well. The photo pages h
