A little late to the party here but am glad the mods decided to do this. As someone relatively new to the band, I use the ratings to help me pick shows to listen to. People who game the ratings - presumably ranking shows they went to higher and those they didn't lower, for some weird ego thing about having gone to "the best" shows - really do a huge disservice to people like me who use the ratings.

One easy fix would be to eliminate all 1 star ratings from all shows. I mean seriously - there has never been a 1 star show. Even the worst shows have at least something redeeming about them. Has anyone here actually ever had a BAD time at a show? Some obviously aren't as good as others, but as someone who went to what were rated two of the worst shows in recent history (Grand Prairie 2016), they were still far better evenings than anything else I could have been doing. The only possible reason anyone would ever rate anything 1 star is to try to lower that show's rating.

Beyond that, I think @betweentheears' 2nd and 3rd suggestions are definitely the way to go. Only real accounts, one rating per user, and everyone's ratings posted on their profile pages.