Desktoptopia

Desktoptopia is an awesome little desktop/wallpaper manager that will automatically update your PC or Mac with fresh wallpapers directly from their online vault of wallpapers. Simply install their free software and set your preferences to how often each wallpaper changes and which libraries you want them selected from. They claim to have a panel that only selects the best of wallpapers submitted, and most of them I have seen so far have been pretty cool. However, if for some reason you aren't liking the selected wallpaper you can easily skip to the next.

[Via: Josh Spear]