Great and thoughtful response. Thanks.

I will say that I have always had more guy friends than girl friends. I usually have one or two close girlfriends but my best friends and people who I know will always be there for me are guys. I also tend to hang out, have late nights, etc with guys. I've noticed from /r/twoxchromosomes that this is a fairly common thing for the girls on reddit.

This is interesting, and kind of deepens the mystery for me. So it seems like a lot of social media websites are built around "guy culture" and the girls that gravitate towards it feel more comfortable interacting with males than females. That makes sense.

I have an idea as to the cause of this that comes from evolutionary studies. Chimpanzee communities are female philopatric, meaning that the male-male bonds are stronger than the female-female bonds. This is caused by females being the "dispersing sex" (i.e., upon reaching sexual maturity they must leave their natal group and find a new group to spend their adult lives - whereas the males can stay in their natal groups for their entire lives). All primates have some form of philopatric system and whichever sex stays in the natal group, usually have stronger social bonds. (side note: the reason for philopatry is a mechanism to decrease inbreeding).

Anyway, in humans I feel as though we are the opposite of chimpanzees (i.e., male philopatric). It may be controversial and not at all proven, but I think over evolutionary times men were the dispersing sex. It seems to me that female-female bonds are a lot stronger naturally than male-male bonds. In fact, a big problem in the modern world (to me anyway) is how impoverished male social life can be (without the aid of females). Could it be that because of this that males use websites like Hubski and Reddit to enhance a social life that they are fundamentally dissatisfied with? Whereas females do not need to do this because they have a strong social and discussion network (thus favouring sites like Pinterest and Facebook which are not discussion based)? This would also explain why mostly only females with a lot of male friends gravitate to sites like this as well because you are immersed in the male culture that has produced this proclivity.

What say you insomniasexx?

Side note to mk and thenewgreen: if my hypothesis is correct, could this mean that we could attract more females by making a image and video exclusive section?