Are you on Twitter? If so you could win yourself a copy of Plants vs. Zombies on PC (Steam).
All you have to do is retweet the following update and you’ll be entered into the draw.
“RT @zombiecommand Giving away Plants vs Zombies on Steam when I hit 500 followers! RT this to enter.”
Of course following us too would be a good idea, you know, since the give away only happens when we have 500 followers.