I have a large collection of desktops and change them regularly. I get tired of any of them pretty quickly. Most of the ones I have I have taken myself. But during football season I try to use Football and/or Seattle view ones.
Whenever I take photos I decide if any are desktop worthy and put them in a file. If I want to send them to others I first put them in my #2 hard drive then back to another file where I can crop them down to 6-700 pixels so they won't be so huge to send. That way I keep the version that I want for a desktop.
But that's probably old stuff for most of you.