Hub Pages is a wonderful site. You can post your own essays along with pictures and videos. You can partake in the forums. You can keep up with a lot of what is going on in the world. It's a free site and, if you are extraordinarily fortunate, you might even get a little money for your efforts.
Don't hold your breath on this last, of course. But seriously, I've been placing stuff on here, reading other's sites and answers to questions for seven years now and I still enjoy doing so.
So that's what I do on Hug Pages. What you do is entirely up to you.