Many times with unknown providers I run into instances where another provider is in the room. Some are rude enough to stay in the room to watch. Luckily they don't talk about prices.

Question for you guys if the other one mentioned they would do doubles for a certain price would you leave to be on the safe side ?

Or are you bipolar?

hey bphunter, I saw that to. where did his answer to himself go? WTF

I've even stayed and hooked up with the friend while the one I was just with watched...or did Whatever...she didn't bother me.
I had visited the original provider,and said hey I believe I saw your buddy on the elevator...she then called her back up...

I think that much of the time it's a scam meant to separate you from your cash... but I did once actually encounter a travelling pair where the second lady didn't have anything else to do for a while, so I got a doubles session at no extra charge.  Bonus.  

I've heard about girls hanging out in the bathroom, but I've never had it happen to me.  I did once encounter a lady whose ad I had seen just leaving the room I was going to, but she was carrying a laptop and looked like she was going to go hang out somewhere while I visited.  Not especially subtle, unless she's careful, but she was dressed pretty casual, and could easily have been going down to partake of the continental breakfast.