How do you pick the RV Parks you stay in ...

If you are looking for lowcost sites, this is a good site to check. When you are staying at a cheap campground, keep in mind, you get what you pay for. but Free Cammpgrounds can get you some lowcost sites to stay for a night or two.

I file personal experiences first. I file reccomendations here and on the national Parks and etc camgrounds here second. Park Reviews I look at but pay more attention to posters in these forums.
I have the book , cant' thin of the name, that recomends campgrounds. I find it somewhat handy but not what I expected.

Where is a good place to rate the campgrounds or RV Parks/resorts you visit????

Location, Location, Location! We spend a lot of time at the beach especially in the summer to avoid the Central Valley heat.

We have two or three books. Don't reply on Woodalls any more for reliable accurate info on quality of and amenities of campground,
Nor any of the others. Use it for a guide and have found as advertised some times.
Whatever we have seen here we make a note, of it, and word of mouth.
There are other sites but don't spend enough time to check out recomendations.
If we have a good experience I will make a not of it and pass it along here...if I don't forget.
A whole bunch of times it is a last minute decision and a gamble.
A few, for us stand out such as Patriot Point in La. Traverse Bay RV Resort in Mich and several others there and elsewhere.
Would be good if there was a silent shopper here but who could see all the RV parks. Might take several years of RVing enjoyment.

We use the Allstays rv & campground app as well as recommendations from the forum members here.

Location, reviews.

I do what most others have been saying here, but I also Google the CG and click on the images link. Most FL state parks show up to 3 images per site as well. I have seen good reviews for a CG only to be quickly crossed off the list due to the images.

Allstays RV & Camp app on my phone which loads the reviews from RV Park reviews, though, I usually tend to use walmarts and other overnight stops more than campgrounds in most cases (I'm usually moving along each day and save the campgrounds for when I'm staying put for a while).