I've used them maybe 3 times since they launched, but I always assumed that I did have this protection with AirBnB. I have had hosts ask me to avoid booking th

I've used them maybe 3 times since they launched, but I always assumed that I did have this protection with AirBnB. I have had hosts ask me to avoid booking through the site and arrange payment outside the system, but I hesitated to do that because I figured the AirBnB fee paid for some "peace of mind" that I wasn't going to get shafted. If I wasn't buying that... what was the fee supposed to pay for?