Hey Renee,
Very interesting point of view!
While my example of "gambling term + for women" may have been a bit extreme, it is actually something I did when first looking into the industry. As Christaan mentioned above, many gaming sites have "hot women" featured in them and on the other hand, there are also a lot of sites that are extremely pink and glittery. Of course, that's not saying that women cannot enjoy either of these sites, but there are definitely some sites that are a happy medium between the two kinds.
In terms of marketing, the general consensus among professionals in all industries is to break up the target market into segments and to attract each market segment separately. This does not always mean changing the product or service, but sometimes changing the marketing tactics.
In this case, attracting traffic to your affiliate sites is what drives your business, and with the emergence of more women playing online, why not take a few steps to attract them to your site instead of a competitors? As mentioned by SweetBet above, something as simple as being active on Pinterest can help grow female traffic on your site without monopolizing your male market.
Anyways, this is of course something that is still being researched and I'm working on learning more!
