Microsoft has just updated the Facebook app for Windows Phone with a few handy features for both social and anti-social users. Photography lovers can now attach multiple images to a single post; the more bitter among us, meanwhile, can unfriend contacts and unlike content. There are also a few universal improvements, such as inline @ tagging and speed boosts for both posts and check-ins. If you want to impress friends -- or even make a few enemies -- you can grab the Facebook upgrade through the Windows Phone Store.