Hello Hans -- Are you talking about
campground reviews (south)? These are free will offerings by members and not necessarily comprehensive. If anybody has suggestions they might want to know what part of the state your friends will be traveling.
An alternative could be to look at the
state parks website. Woodalls makes a campground guide available at any RV store -- mine is a few years old and I still use it if I call ahead.
TravelTex Home puts out a great general guide to different parts of the state.
A displaced Texas native,
Bob