If you’re looking to bring Facebook to the Windows desktop and Twitter-centric update tools like Seesmic or TweetDeck are too limiting for you, you might want to take Fishbowl for a spin.

The app, built on Microsoft Silverlight 4, features photo browsing and zoom, photo slideshows, drag-and-drop image uploads and a completely ad-free way to browse and update the news feed. It works on XP, Vista and Windows 7, and just became available for download.

We’re already more addicted to Facebook than could be considered healthy, not to mention our affection for the Mac, but for those Windows users looking for a rich desktop experience, our friends at Download Squad are calling Fishbowl a “kick-ass Facebook client for Windows 7” – it’s free and built by Microsoft’s own developers, so it might be worth taking for a spin.