zBUCKz does not support .xxx
Also here's more sites that have come out against .XXX (hard to keep up as the list keeps growing):
http://www.gaydemon.com
- banned all .xxx sites from it's link directories
http://www.bestmaleblogs.com
- banning all .xxx blogs from it's directory
http://www.gaydemon.biz Webmaster industry board
- banning all posts related to selling .XXX or earning money from .XXX including link trades
http://malesharing.com, arucci.nl, thedailygay.com, gaypornlinks.org
- banned .xxx from all link and blog submissions
http://adamfucksadam.com, nakedguysblog.com, allnakedmale.com
- banned .xxx from all link trades
You can find all this info from threads on the Gaydemon.biz webmaster board.