A number of men in New York City used the site to lure a Brooklyn man to a remote area where he was robbed and murdered.
The men were found when one user was identified via his screenname.
Adam4Adam has also been used to "out" people who have otherwise kept their sexual orientation somewhat secret.
Unlike similar competitors, Adam4Adam does not charge members to use its full range of services.
Instead, Adam4Adam receives revenue from advertising, particularly from pay-per-view pornographic websites and companies offering erection enhancement drugs like sildenafil, vardenafil, tadalafil and their generic drug equivalents through mail order.
If successfully applied, these regulations would mean that Adam4Adam and similar companies would have to keep records proving that individuals appearing in photographs or videos are over the age of 18.
They would also have to "categorize those documents in a meticulous manner", with failure to comply resulting in possible felony charges and prison time.
The site encourages health organizations to create "Health Counselor" accounts.