Yeah, a while back Google Maps sent out a cheerful "here's all you've contributed" email and i clicked through and found my complete history. It was a graveyard of rejected edits for things like closed streets, wrong business hours, and spam listings (IDK the payoff for the spammers but there's an ongoing cluster of fake hotels and businesses near my old apartment). Seeing the total record of incorrect stuff that i had fruitlessly spent my own spare moments to fix convinced me to quit doing any free work for Google.