After playing 3.5 at the table regularly for years, five friends have suddenly found it almost impossible to schedule a regular session for more than a few hours at a time. We recently agreed that we wanted to play through the Pathfinder APs but we simply don't have time to do it.
So we're giving Rise of the Runelords pbp a shot, hoping that we can make our way through the campaign over time. Time is still a factor and none of us expect this to be the most active pbp campaign but we're still going to make an effort at it.
Update: This campaign is on hold until the fully updated version of RotR is available with Pathfinder rules.