Rainmeter, the desktop customisation tool that's behind most Featured Desktops and slick things like a Windows Phone 7-style HUD, has an official home at community site deviantART, providing feeds and easy sharing tools for trying out all kinds of clever desktops.
The Rainmeter group and posting page isn't brand-spanking new, but has recently seen a lot more attention paid to it, and it makes a nice organising spot for those looking to try out new Rainmeter setups, normally spread out across deviantArt's vast search results pages. As alluded to in the Windows 7 Phone HUD how-to, there's a new deviantArt-hosted tool, Rainstaller, that makes trying out other user's Rainmeter ideas a mostly click-click-done matter.
Rainmeter's deviantArt page also provides a bevy of feeds, ranging from the firehose of a full deviations list to more refined fare like the Skins of the Month and selected screenshots galleries. If you're a Rainmeter fan, or a newcomer looking for some guidance, it's definitely worth bookmarking or feed-watching.