So this guy is probably talking about affiliate marketing.
My best guess:
1. He has access to lots of CPA (cost per action) offers from various CPA networks. Example: "We'll pay you $3 for every person who fills out this info request form about our product."
As an affiliate marketer, he's always hunting for offers where the payout seems high or the offer seems attractive, basically an arbitrage mismatch.
2. He has found some gaming offers that he thinks pay out pretty well and convert nicely. Good landing pages, good product, etc.
3. He buys ads on these womens gaming sites late at night because they are click happy and the impressions cost less due to it being night time. This sends people to the gaming site where they convert at a profitable rate.
Affiliate stuff is all about arbitrage.