Here are a couple of lawyers who specifically hold themselves out as representing the adult webmaster community:
http://www.xxxlaw.net
(chicago)
http://www.coollawyer.com
(ft.lauderdale, florida)
http://www.adultsitelaw.com
http://www.flowerslawfirm.com/index.htm
(washington, d.c.)
http://www.adultinternetlaw.com/
(represent al4a.com and ynotmasters.com)
(san diego)
http://www.rjg.com/
http://www.kyroslaw.com/
http://www.markskatz.com/
http://www.firstamendment.com/
(president of the florida bar free speech committee and works in a law firm with cross-country reach (california and florida)
http://e-lawconsultant.com/
http://www.1st-amendment.com/
There are many more who don't hold themselves out as representing the adult internet community. Ask around.
These sites can help you locate a local bar association near you:
http://www.hg.org/bar.html
http://www.martindale.com/xp/Martin...assoc_intro.xml
http://www.lawforum.net/resources/bars.htm