Well, funny you should bring this up. My DH is also in the IT arena and there is a firm in my local area that is always hiring for IT professionals.
Just the other day I posted about this very issue. Apparently there is a company in my area that has a very innocent sounding PR firm name. In actuality, they are a web hoster of adult porn sites and partners with a larger conglomerate of adult stores in the area. My DH and I laughed about that if they call him for an interview, what would he say?
Yes, the adult industry is a booming and thriving industry. There is really no shortage of work, and people always want porn so to speak. If you are IT savvy, there are tons of options for working either in the web design, database, Network admin, etc...
We decided that if it was a situation where you had to feed and support your family and all other options were closed, it would be a possibility for a very short term area until a more credible offer was obtained. Because if you are in that industry for a while and try to get out, it still says on your resume that you worked for a porn industry. HR people in regular corporate environments could see you as a pervert!