That site has an enormous number of bonus and guest members (over 50,000)that is well worth the $20 a year. I like this site and use it often. For an unlimited number of experts that really know their business, I go both here and to SGW. Jay Gentry does not charge anyone anything but he has lots of expenses keeping up the servers and paying the IPS provider and it ain't cheap.
The ads pay some of it, the bonus members pay some of the expenses, but pay or not, anyone is welcome to post on SGW. He doesn't complain if you don't become a bonus member. I pay my dues every year but get no special treatment, just a banner indicating that I am a Bonus Member.
SGW is the most addictive site I've ever been on.