Someone posted in the community forum that they found that when they let the site make their thumbnail that their views increased considerably.  I tried that but I think it depends on the subject matter of what you are posting.  I thought the first angel I posted in my gallery was my best upload to that point because I actually managed to make  my own light set for it and it came out exactly how I pictured it in my head.  I let the site create the thumbnail and it is the image with the least amount of views and comments in my gallery.

Personally I don't really think there is a real way to increase your views and comments. You can jump through hoops all you want in order to try and increase both, but what it comes down to is developing a "fan following", and unless your name is a prominent one on the site and well known throughout, I don't really think you'll be able to compete with the long term, well known merchants here who seem to be the ones who get the most exposure for their work and thus the larger fan following.

If you are looking for "hits", post nudity in the thumbnail, or mark the image "nudity".  However, nudity doesn't equate to comments.

Personally 1000 hits and 10 comments simply means that 1000 people looked at my image and 10 were moved enough to post.  Now those other 990 might have spent 20 minutes oogling my image and thought I was Piccaso,  or they may have glanced at it for 1 second and tossed their cookies!  LOL

Views mean absolutely nothing when you think about it. 

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi