It's a scam.
They told me when I signed up with them initially that they'd send me some business/modeling cards... I paid 50$ for them, and they never came.
DO NOT TRUST THEM!!!!!
I got a call from Adam Chase @ Explore Talent. I'm staying pretty busy with LA Casting and Actor's Access. I believe they are the most reputable sites and wouldn't waste my time with any others.
I got a call because I had a free profile so that asked me to upgrade so they can give me the information. They said it was for Phatfarm and Baby Phat. The casting was to be held in New York city. I guy named Carter Monroe (had a Southern accent) called me to update my pics on their website.