You have to build a reputation like anywhere. When I started posting here, I didnt get many comments(didn't really deserve them on some images). As my art developed I started getting more and more. I've been here over 3 years so far and averaging about 20-30 comments on my good pictures. Animating thumbnails is a way to get more people to look at your images. It helped out on some of my waterfall pictures. That's what makes people look at your image in the first place, or for me atleast. I don't care who's name is below it.