It was news regarding Facebook apps 2-3 month ago, that Microsoft will remove them all.

As you can see its not done :(

They (well, in this case Facebook) did request it:

http://www.wpcentral.com/facebook-windows-phone-store-tradem...

They might, but Microsoft should be far more proactive in cleaning up this crap. Even apart from the big name trademark infringement, most apps are total and utter junk. It's hilariously bad.

MS should at least have some sort of search filter to say "please only show apps that have been reviewed by a human or two and are not obvious crap".