A little info about
RVPR... The site is managed by volunteer moderators who aren't affiliated with campgrounds. Reviews can be submitted by anyone but all of them are screened before posting. Moderators there do this to weed out bogus reviews by campground owners trying increase their ratings and to weed out spam, etc. They also require 2 reviews before your previews will post for public view (again this reduces faked reviews). That said, it's pretty easy to do a review and a huge service to the RVing community. I've found some awesome campgrounds there.
RVParkPeviews.com is going to get a face lift this spring along with a new mobile app and the hope is that it will be easier to use and easier to search. You'll also be able to upload photos to reviews as well.
There's nothing to stop FRF members from posting a review thread here in the travel section and I think there's room for both options on the web - more information is always better, imo.