I don't know about the rest of the site, as I'd never heard of it before, but I found the research thread about the screenshot watermarking pretty interesting, as well as further eroding my trust in Blizzard after all the other things they've done to indicate a total lack of regard for my privacy. There's some info about the watermarking (and a link to the original thread) in
this article on Kotaku, which -- being a well-known general gaming news site -- should be acceptable to post links to here.