It's really annoying to me, as well. But I think it's just some of the smarter and gutsier guys taking advantage of price swings to make some fast money. Doesn't take much to move it a big % and if you're only offering up 500 shares or so, someone bites. The only thing that keeps me from jumping off the curb into oncoming traffic is that it's always very low volume. That means it's just play money. So both of us should not worry.
I must be having an out of body experience as I'm talking to myself! Hope I take my advice and stop worrying about it!
Good weekend, qwerty.