I am not sure how many people still use Gowalla over FourSquare, but if you are still doing your checking in with this FourSquare competitor you will be pleased to know a Windows Phone 7 client is on the way. The app is currently being polished by MacroPod and should be submitted to Marketplace soon. An official app is apparently also on the way, but is almost certainly further off.

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3. Windows Phone 7 Series Rename to Windows Phone 7
4. Windows Phone 7.5 Mango Updates Coming In “The Next Week Or Two”
5. Microsoft Launches Windows Phone In India