DITCH IMAGE SHACK! You should be able to give us ONE maybe TWO links to a photo album on Photobucket, Flickr, Whatever instead of a plethora of links to a website that is plagued with ads and popups.
Also, you HAVE TO give a description of what we are viewing before you give a link to it. Tell me why you modeled, what you modeled it for, what program you used, the challenges you overcame to make it look good, what is so interesting about your model.
I hate to say it, but when you just throw up a bunch of renders it makes me instantly think (really loudly in my head): "HE IS POSTING SOMEONE ELSE'S WORK!" That is because you didn't take ownership and pride in what you posted, hence my feeling.