I polled as "No, but love to try"..... not strictly accurate, cos the few times I HAVE tried it, my partner changed her mind "last minute".... so still waiting!!
I just found out the other night, that my girlfriend was anally raped by her last b/f (

... Bastard!) so her previous liking of it is, understandably, rather diminshed at present. Thing is, despite that, we trust each other so much already, after only 3 months together, she is willing to try it again in time; have I got a great girl here, or what?
Have to agree with Casper too; the "taboo" regarding sex in general, and anal in particular, is still alive & well here in Scotland.
I've been very lucky finding someone who can talk about ANYTHING with me, which is how the question came up in the first place!
As regards how common it is ~ well, I believe it's a lot more common than many people (outside of Pixies at least

) might think; don't know about the cultural/country aspect though.
Sorry to ramble again!) .... and, if I forget next week......
MERRY CHRISTMAS EVERYBODY!
DM