Adjective: someone who leaves all their frequently used files on their computer desktop. This defeats the purpose of a background wallpaper and results in making you even less organized.
ex:

Jeff: hey Steve, what's your desktop background?

Steve: what background?

Jeff: dude, you can't even see it because your a desktop hoarder!

Steve: Dang! where did I put that file!?
by saywat? August 7, 2010
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Similar to a regular hoarder, but a Desktop Hoarder is someone who has a ton of junk on their PC they refuse to delete
That girl has a 2 terabyte hard drive 90% full of junk she refuses to get rid of. She is a Desktop Hoarder.
by Moltres Rider December 15, 2012
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