I don't have to answer this hypothetically. As this is what I have been doing for the past few years. Basically I tend to focus on generic type-in domains. This is limited to mainstream only, I suppose because I have no real experience in the adult industry. Additionally - The owners of generic premium adult domains tend to have irrational prices. Meanwhile, you can find a clueless, unsuspecting mainstream domain owner either desperate or oblivious to the gold mine he is sitting on. In addition to generic mainstream (popular one/two worders) I also like two and three letter domains. Lots of large companies are making this transition. In efforts of having something more memorable -- and easier to access. In example - Burger King owns BK.com, etc.
I say it's a safe and stable market.
Good luck in the game, it's thrilling!
