Sounds like they haven't set their canonical URLs:
In other words, a canonical URL is the URL that you want visitors to see. Quite often canonical URLs were used to describe the homepage. The typical example used is that most people treat the following URLs as the same: www.example.com. example.com.
It appears to be working now. Should have been a five-minute fix.
BUT - I looked at the site and ended up spending some time there - because I'm in the market for a new camera strap or two. I want to get rid of the "branding" of having Nikon and/or Olympus around my neck. (I would actually like to have a couple made with my own USPictures.com brand on it. )
Well, thanks Bill! Yes, don't they have some great stuff? Different and fun. I wonder if I know any photographers who might like something like that....