A decent amount of exposure ? That's what some Vickies should look after... Anyway, the thumbnail is what catches the eye of the passers by. If you go for the easy way to the TOP 20, I'd advise to remember that "a good thumb is a boob thumb". (this being said, I never reached the TOP 20 myself) (and I never found any art of mine stolen on a leech site, to my great shame) Best wishes.