I agree with the PP who says that a family of 4 getting into the single rider line are not abusing the system,I'm a huge fan of the single rider lines and use them all the time.I also know that 90% of those getting into the singles line are not really single riders and that's fine with me.Most people understand the concept of the singles line so that's not the problem,someone used the example of the singles line getting bogged down by the BTG's which I can understand as they in general don't follow rules as well as the general Disney visitor.If it was up to me almost every ride would have a singles option.I've probably ridden rides like Test Track,Everest,Hulk,Spider Man,Revenge of the Mummy and Harry Potter and the Forbidden Journey over at Universal hundreds of times with waits of 5 minutes or less while the regular line is at 45-90 minutes.I also know there are days the waits in singles are worse than other days,Spring Break for example you have a lot of young people who's main objective is getting on the ride quickly and those days you notice singles having bigger waits.Overall the singles line gives you another option and usually works great,a perfect example is TSMM,I never get to ride that ride because I'm almost never at DHS in the morning so I can never get a FP for it, so it's either wait 60-90 minutes or not ride,a lot of times I don't have the time so it's a no go.I hear TSMM in California Adventure has a singles line so I always fell shortchanged,that FP+ might help out the situation for that ride.The singles line is there to keep seats from going unused,if a group of ten is OK with splitting up then they're fine using the singles line.