Lose the blinking text! It’s awful!
The category pages look a little tight since the pictures go right to the edge of their box. And you have rows of 4, but the number choices per page are multiples of 3 still.
I randomly chose a category of Men’s Adidas and since you have put the normal right column stuff in the left column, there is no layered navigation to use to drill down into the category. But when I chose Women’s Ugg, it had the navigation there on the left (but only size and price showed up).
I don’t like the way you rearranged the shopping cart page because the numbers that are added up for the total (the most important thing for the customer) are no longer in a column. The coupon code and the shipping estimate intervene between the top and bottom, and the Remove column offsets the Subtotal so it doesn’t line up with the Grand Total.
The brands shown in the Advanced Search are for computers, not shoes. And it’s a bit confusing to have Size and SHOESIZE.
When I clicked on the search term “clogs” on the Search Term page, it took me to the magento demo store even though the link showed your URL.