Who thinks this will work? I spend lots of time making my desktop look nice and I guess it could be considered "artwork". So... Yeah? I think it would be fun. I love decorating my desktop when I get bored. I get bored a lot. Plus, everyone can participate =) cause everyone can do it!!
Edit: I can also have up a list of desktop customization sites for everyone to use. Things like www.deviantart.com
and tutorials for customized visual styles =).