I guess it's pure habit, but I'm use to seeing the login aspect in the upper right corner. I don't think people's eyes are going to go where you have it right now. You have dead space in the upper right corner. You might as well use it for something.
The upper and lower middle product sections need headers. I know they are products, but why are they there? Are they specials? Are they just random items? Are they something I like based on my products views or purchases?
I would horizontally list your Facebook and Twitter listings. I'm not even sure you need to mention following you there. They could be placed to the right of the menu or even left of About Us. It would help moving your content up by doing these sort of things.
Not sure I would put site stats. It's great if you have 1 million registered users. It comes across as a deterrent when you have less than 20 as you do now.