One thing I wanted to amend in my suggestions from the other thread: Sometimes some of the worst offenders at group rides are experienced riders who think they're too bad-azzed to mind their manners. In fact, it's not the new riders who worry me the most. It's the group in a 20-deep paceline who zoom past me at 25+ mph with no warning and who give me all of an inch. Yeah; I don't like them.

As a new rider though, this is why it's important to really have your guard up at event rides. These pacelines can literally come out of nowhere so it's important that you keep an eye on what's going on behind you and that you ride predictably and to the right of the lane.