You can level all kinds of legitimate complaints at Facebook, but not iterating is certainly not one of them. The Facebook web interface is currently undergoing some big changes, with those changes being rolled out to users on a staggered basis. We've not got all of them ourselves, but one that we do have access to is Stickers.
Facebook Chat is one of the most heavily used instant messaging protocols around right now, partly thanks to the fact that just about everyone on the planet seems to have a Facebook account. That, coupled with the fact that there are chat enabled Facebook apps for all the major mobile players means that it's not going to go away any time soon.
Windows Phone 7 Mango includes tons of new features, including the seamless integration of Facebook Chat right into Messaging app. We have got tons of emails recently from our readers, asking us on how to activate this new feature.