There's an old thread somewhere about these (possibly by Vaio?) but I can't find it.
http://www.powerballs.com/ <--- for people who don't know what they are
I bought one today, and I'm crap at it. I just can't get it going. I pull the cord and move my hand around feeling like a idiot as it slows down and stops.
What I'm hoping for are some responses like "yes, that happened to me at first but then I discovered [insert valuable advice]"