I generally don't like them. I think they look trashy and I don't know why but I find them a real turn off.
Except, sometimes I find them a huge turn on for some reason. Only very occasionally.
One girl at university I had a few casual drunken fucks with (and a couple of failures due to the dreaded brewers droop). Big tattoo all the way up her back, dunno why it just complimented her personality and gave me the horn.
WG recently I booked and didn't realise she airbrushed them out of her photos. Quite a big one, but line drawing style and I was able to ignore it to an extent, then found I quite liked it. Awesome fuck more than made up for it too (review to follow)