Windows Phone users worried that Whatsapp's devs might be enjoying theirFacebook moneytoo much to fix the app can now rest easy. Whatsapp is now back on the Windows Phone Store after a couple of weeks' absence, and it even comes with new features, including chat backgrounds, better privacy settings and the ability to customize notification tones. Its devs pulled the app from the store after a lot of users reported having serious issues with update 3 for Windows Phone 8 that permanently disabled notifications or caused persistent errors. Just as Microsoft's Windows Phone guy Joe Belfiore promised on Twitter, though, Whatsapp's back and ready for more cross-platform messaging.