Probably some sort of 'reverse billing' scam site, ie offer you a free trial (but you have to input your credit card details) and then in the 'terms & conditions' they'll be a clause to say if you don't cancel within 3 days you'll be billed $50 a month till you do.
And most people of course won't realise this. Watch out for the reverse billing con, it's everywhere on the net these days.
Now everything on their site is free. I tried the Equity Chat Room - its pretty active and the guys seem professional. Seems that they were charging, then just decided to give it away for free. they have different rooms in the chat room for different traders and they offer some nice savings for Briefing.com and other services.