This site has two user account systems, one for social activities such as writing product reviews and receiving email notices, and the other for purchasing products. This login is to access the social capabilities of the website. It will also permit you to save preferences, such as viewing or hiding adult content when you return to the site.
To check out the items in your shopping cart, please use the shopping cart login link in the upper right of most pages.
These dual logins will eventually be combined. However, this is a significant project, so the dual logins will be necessary for some time.