You really need to ask someone who does it, anybody who doesn't can only speculate. You don't get many on here openly admitting it, it's seriously frowned upon. The first thing I look for on an AW profile is 'bareback' and unprotected sex' if either of those are listed I don't bother with the rest I just move on.
Search the net for the bug chasers sites and ask there if you're really that interested.