That popup ad is hideous. Don't make me stare at a giant ad that takes an eternity to load and blocks your entire screen before I even decide if I like you. That is an automatic fail and I would leave the site.
The site itself looks reasonably appealing. I am curious what the business model is too. Advertising? List building?
Edit: I see there is a premium account feature, but no pricing listed to upgrade. Big red flag for me. I want to know what I'm in for if I choose to upgrade before going to the trouble of trusting you with my info.
Double Edit: ok, I am confused. I see the premium account is free too. So back to what is the business model? Ads?