Websites mapping free camping spots

Slightly off topic but several years ago I was going to end up about 250 miles away from home after work starting a 3 week vacation. From the rvparkreviews site it gave me the impression of a sketchy trailer park. Looking at maps I see a Missouri DNR spot further on down the road and not far off my route. I find the webpage and it allows camping at a spot with about 4 crude sites. It was not listed on freecampsites so when I had time that became my first entry to freecampsites. About a year later after another review that agreed with my original assessment I got a 3rd or 4th review. GATE WAS LOCKED WOULD NOT RECOMMEND!! Well I responded to that as there is NO gate so they were lost. A previous reviewer gave even more detailed directions. I travel with a dedicated GPS and my location was spot on. What I have learned after adding a few more new sites to freecampsites and also finding errors in other entries is that they are very responsive in correcting bad info. I added a site last year in Idaho that was very confusing with another pay site a few hundred feet away down in a ravine. I warned them about the confusion and they emailed me with some back and forth discussion. It is now published and they put my remarks in about the confusion as the other site is larger and not free. Off soapbox :)