Facebook for Windows Phone 7 has been given a significant update, which brings it up to speed with many of the features of the iOS and Android versions. The new version lets you use Places, which allows you to check in to nearby locations, as well as geotag photos. Because nothing says awesome like letting your friends now exactly how often you go to Panda Express. You can also now tag your friends in photos directly from the app.
If these are useful updates is entirely up to the individual, but you can sometimes get decent coupons through checking in to nearby businesses.
[via Windows Phone Blog]