Here’s the armchair theory that popped up first:
I see it as a biological thing, paralleled in different ways in the animal kingdom. I’ll use horses as they are the most familiar to me group dynamic-wise, but wolves, primates, and others have similar structures.
In horses, the mare is in charge of the herd. Leadmare is precisely that–she is Big Momma, and she ain’t taking nobody’s crap. (Elephants are like this, too.) As lead mare, she decides when and where the herd eats and drinks, and keeps everyone in line. That obnoxious colt that just realized he has testicles will get quite the stern “talking to” by lead mare when he starts acting bigger and more macho than fits his britches. She disciplines the family and maintains order.
This means everyone’s interactions are her business. If the roan is giving the grey crap, she will know about it and their uppence will be coming. Mares that aren’t lead are either trying to undercut the mare on their way up, or seeking her approval (my mares are one of each–the one who is constantly challenging me to be the leader, and the one who wants to always be in my favor).
Contrast that to the stallion, who is guiding the herd to whatever the destination may be, and protecting them from danger. He is the overseer, the fighter, the guide, but doesn’t get involved in the daily nitty-gritty. The stallion without a herd–again, like in many other species–hangs out in bachelor bands, teasing and play-fighting while also bonding, and searches for the herd of mares whose stallion he thinks he can take.
So…perhaps biologically females are geared toward the interactions with others (the gossipy stuff included), and the males toward conquering and moving on (sports–the ultimate bachelor band, heh!).
Again, this is all knee-jerk. I may or may not be talking out of my ass.
BTW, I like the occasional People to read certain stories, but I can’t stand all the articles about weddings and babies and such. Just doesn’t hold my interest. I’m more interested in the truly dramatic–the hometown hero, the kidnap victim speaks, etc. Of course, for a while, Britney Spears was in the “truly dramatic” category as well.