You mean like ads above urinals, which are becoming more widespread?
I wouldn't attribute any sinister motives to the advertisers, they just want to make the most of their dollars.
However, in regards to so-called "gay advertising" it already exists, as does black advertising, spanish advertising, etc. complete with companies that specializes in such things...however, to see something really scary, check out the company Buzzmetrics for what they do...
I am in agreement.
The Urinal ad is a good example of an ad that is seen by men but not women.
I am just saying the next step is going to be negative targeting, IOW making sure you ads are NOT seen by certain groups.
Can't boycott or be offended by what you don't know about.