Heptadecagon

In August 2012, I joined Twitter . Now as most of you readers know, I'm not a big Twitter fan. I use it for Literary Mama purposes mostly, to give a shout out to the masses that writers I work with have published something with us. But I don't have the time to use Twitter well, and really, I wouldn't know how to use Twitter well. (I know the lesson there--if I used it more often, I'd learn how to use it. But really, I have other things to do.) So here is my question to you: What are the rules of Twitter? I wonder if they exist, and if they did, would I understand them? Which leads to my second question to you (which has to do with followers): Why would anyone follow me, get me to follow back, and then unfollow me? Is that behavior just to increase their followers number? I'm at 963 followers right now but I know that number will fluctuate. I don't expect people to follow me back if I follow them, and if I do follow someone and they follow me back, I don...