Facebook?

I've tried figuring out ways to promote the fact that I've got stories available through Amazon's Kindle. I'll have more stories up soon. But how do I let people know? My blog doesn't get much activity. I read a series of emails today at a list-serv that suggested you had to use Myspace and Facebook. Most likely Twitter. I don't know if I can do this. After all, I suspect you need a little enthusiasm for these social networks, no? Certain amount of upkeep to stay current, no?

And what would I do once I was on Facebook? From what I understand, I would ask people to be my friend and then become friends with others and when they had birthdays, I'd send them messages. Where does the announcement of new titles come in? How is this marketing? I guess I'm afraid to say that I don't get how this would work. Enlightenment, please.