There have been a few suggestions about "data cleanup" in others forums and and usually the posters get pointed to Zapper which I agree is an excellent tool and should be used for that purpose. It occurred to me that the times I most often spot apparent discrepant observations is when I'm using the lightcurve generator. Frankly, although I have the best of intentions, I rarely get around to firing up Zapper to flag those observations because I'm busy doing something else and usually later it's "What was that star again?" and "What was the approximate date of those funny observations?"
It would be nice to have a button or something right on the lightcurve page to start up a web version of Zapper right then and there with the date range that I was looking at so I could immmediately mark those observations. I think you might get some more participation in flagging possible discrepant observations.
Just a thought,