I have been to Disney many times, and have pretty much all the touring books that there is to have. I subscribed to Tourguide Mike thinking that there would be alot of new material for me to read. If you have never been to Disney, or it has been awhile, you will probably find this site to be a good source of information.
On the other hand, other than some of the trivia facts, you can gain the same information from this board, and other Disney Guidebooks. The touring plans for our trip pretty much followed the itenerary I found in the Unofficial Guide. If I had previewed the site for free first, I probably would not have subscribed myself.