Second the pitch. You'll learn more that way. (i.e. removing screws, watching someone lead, etc.)
Also, no one is saying that you can't top rope, they're just saying that if you do be considerate of others: be gentle on the ice, don't create hazards for others (i.e. top-ropping a second pitch), and share the route (i.e. move your top rope to the side when someone wants to lead the climb)
Edit: Damn, you guys are quick with the responses today. This post is about 4 posts behind the times. All my points have already been said.
Slow poke...throw your dial up modem in the the trashcan!!