I've been bouncing a thought across a couple of these threads. Basically my single thought about mobile porn is that it really isn't that hard to make a site accessible to most modern portable devices. Pretty much all you need to do is make sure you're conforming to the XHTML doctype and you're golden. WAP compliance, while nice for some older devices, isn't 100% necessary these days since the devices (even the low end ones) are getting beefier. My thought on the subject is aim for XHTML 1.0 Transitional compliance and you'll be set for the bulk of modern mobile devices plus you'll probably show up higher in the search engines since the spiders have less problems digesting pages that conform to their purported doctype (at least that has been my experience). Best advice: run your site through the validator at w3. Example:
http://validator.w3.org/check?uri=www.adultpicweb.com