The original question was asked by a self-described "old person", of which I also am one. He stated he does not trust an RV park that does not have a web site.
I'm surprised, considering his experience, that he actually gives credence to everything he reads on the internet. I do not.
I've been in many campgrounds that have little resemblance to the description and pics on the website, and they were not very nice places. I have also been to little out of the way places that no one has written about but are quite nice.
As a previous poster commented, I also use the satellite view of google maps and zoom in to get a true idea of the place and surroundings - such as railroad tracks, interstate highways, or cattle feed lots - none of which are ever mentioned on a park's website.
