Who is more likely to find you?
I have online profiles related to my interests, lifestyle and sexual preferences. Those that share the same preferences and are curious or engaged in similar interests are most likely to find me than anyone else.
When they are using search engines or browsing social networks that I participate on, looking for people with the same interests as they have, they will find me there.
Equally important is that the general public will not find me. If you create a profile or web site that is too general wither it will suck and not attract anyone, or it will attract too many and you will waste a great amount of time trying to find good contacts in the middle of it.
