Poll - Backgrounds / Screen Savers

I've been thinking of offering free backgrounds / screen savers of my best images. I have a few questions:

1. Would you use them?
2. What resolution do you want?
3. Anything specific you want?

They would have a small copyright and URL on them, but nothing too obtrusive - much like the image above.

From my Google Analytics statistics, it looks like 1024 x 768, 1920 x 1080, 1680 x 1050 and 1366 x 768 are most popular. I'm surprised by the first one, but I guess that's a tablet screen dimension, not a laptop or desktop screen.