Most website seals like this mean little in terms of how reliable or secure a website is. User reviews (if there are enough to outweigh the astroturf posts) are usually the best way to gauge a site's trust.

Why You Shouldn't Trust a Web Site's "Seal of Approval"
Chances are you've come across "seals of approval" on web sites at some point in your web browsing life. Whether it's a Better Business Bureau seal, a Norton Secured Seal, or the TRUSTe Certified seal, they seem like a good thing to watch out for. How-To Geek points out how wrong that is.