Blog Store's

I have created several blog stores. I need some reviews of what i have done. I did it all for free and was able to create working online stores. Give me your idea's & review of the blog stores.
http://coogicentral.blogspot.com (only Coogi Products)
http://jewelrymagic.blogspot.com (Jewelry Store)
http://saleretailmainstreet.blogspot.com (this one is not a store)

Thanks in advance for giving me your idea's
SaleRetail

I like the coogicentral layout the best. What did you use to create the blog stores? simpleCart(js)?