Dummy account? Along with the other 3 that were created in the past hour?
More like over zealous fans of the original author. And, of course, the original author of the post. I believe new accounts don't have up votes though, so I don't think they can "game the system" if you're worried.
Guess that's possible. You don't need upvotes to game the system. I usually don't read a story w/o comments. I'm sure I'm not alone in doing that.