Even without the $3 discount--best money I have spent so far for my June trip! I have become addicted!!!!!
There are definitely more people using the Disboards, but the advice I have gotten on TGM has been so specific to my trip. After just a couple of months, I have all my ADRs planned, general itinerary for the trip, exact touring plans for each day to minimize wait in lines, Monica's cards printed/laminated with the best information ever for touring, and have gotten so much information from my AVP.
If you are addicted to planning your trip to the last detail, do not miss this one! Even if you just want general information, better money spent than any book.