I would suggest you read that silly thread about pimping your image. That undoubtedly will get comments coming.
Another longer term thing is to join groups on subjects you like and that you take images of. Then go throgh the pool and comment on and tag images as fav's that you like. Also I'd suggest going to the artists profile page for those images and adding the person as a contact. You may find that if your images are decent you get reciprocal contacts. Every morning with my coffee before work I look at my contacts new images and if I get a chance or am moved I post comments. I suspect that many of the comments on my images are from contacts or folk seeing images in my groups.
oh and you can also look at yoru contacts favourites to quickly find even more images you might like...it's all very incestuous....
Gordon
P.S. If that fails I agree with the naked women comment