If this site were ever to add the rather obvious features (show my profile only to those who have indicated that they're looking for someone like me --- a couple in our case and show me only the profiles of people who have clicked on "Actively seeking" button(s) that match my profile ... if they set it up so that I didn't see any profiles for women who are "not interested in men" or "not interested in couples" ...
... well that would be easy. (They're just different sides of the same coin, limiting who my profile is visible to --- gay men and dominants of any gender don't benefit from seeing my profile here --- and limiting which profiles I see (I don't need to see profiles for women who are not interested in men, not interested in couples, or just not looking for a dominant for any other reason).
It would also mean that practically no real profiles show up. Only the scammers would show up for most men looking here.
(Of course getting rid of the spammers would also be relatively easy. That would make about 90% of the female profiles disappear).
Sigh. They'll never add features like those. It would severely cut into their ad revenues.
Remember folks, you are not collarme's customers. You are their product. Their customers are the advertisers. Every time one of you successfully finds what you're looking for (by way of a real-life playmate, slave, master, submissive, dominant, etc) then they lose a set of revenue generating eyeballs --- at least for a time.