Mine is public but I do have cigars I keep private. The public part is pretty much up to date.
I don't mind the occasional PM for a trade and would not hesitate to ask a fellow geek if he (or she) is interested in one if I happened to see stuff that I would kill to try. But then I do not feel it is automatic, a Geek must retain the right to say no to any kind of request.
The wish list is another story as I feel it's a very useful tool when you want to surprise someone with a bomb, fill your part of a trade or whatever reason one would have to know other geeks liking and tastes in cigars.
Just my $0.02