Well my opinion is both sides of the fence.
First For:
1) Buckets and buckets of info. I dont mind buying all the guidebooks and TGM is just another guidebook. if you can only buy one book and you are limited financially i understand, though i took a book my last time before TGM and barely used it more then a park map... TGM's articles are woth printing.... that being said i would say TGM is a viable option as your one "book" for your vacation. THough i would suggest collecting as much info as you can anyway
AND some of this info is definitely just mikes. Forget those who said they knew everything because they can not possibly know things that come directly from mikes own opinions.... because thier from his head!
2) community- this has pros and cons... for now the pros. Everyone is freindly and alot are willing to help you. It is also nice not sorting through 6 million DIS posts to get the info you want. they also for the msot part safe guard their information from the public. think of it as perhaps a club.
3) Mike from what i understand and have seen him post is generaly a good guy. He refunds promptly and trys to to do the best he can. He has stated he does not have to do TGM, he only does it because he feels that he can share info with those who dont have the big bucks to go with him personally. And believe me, when he has stated what he charges we all just went WOW.... the man makes money without the website, and does it to help others not so much to make money.
4)His plans work. If you want to see the best of the best and never have to wait too long in crowds then Mike is the man. If that is what you like, then he will be more then what you need.
5)He teaches you how to make your own decisions... how to think acording to the school of logic known as Tourguidemike. I think that is a very valuable asset he tells you why to do something when and you can use this info on the fly. This is the info no one else can give you unless they have the same experience as mike. this is the gold of what you are paying for.
Against:
1) community, you pay to be in a community or this "club" as i have dubbed it above, but you soon realize people have become fanatical for mike. Honestly some people that come over here and praise the gospel acording to Mike have no idea what they talk about. They don't have their own opinions on the boards over there and their posts consist of only praises to mike and nothing worth contributing. as soon as you say something negative they are on crusade. This can be very frustrating... and time consuming to sorth through. I also felt that their questions (as meaningless as they were to the subject at hand) would be answered more redily by mike, thus leaving less of his precious time to answer real questions by other members.... However not all of TGM members are like this, and their are many that are very valuable to that community, those are the wons that have stepped in and answer those questions mike gets around.... now if you feel wrong to pay mike money so a "teacher of the school of mike" can answer your questions then this isnt for you. It was just something that irked me. But then again, i love the guys over there that did help and they have come over here and helped too. some have been mentioned in this post already...
2)Site navigation. Its horrible.... period. He needs a better system.
3)updates are not as frequent as one may like from someone that "is in the park everyday."
4)if you really want to see everything take multiple trips and don't use TGM for all of the time you spend in disney. Take his advice for some but not all...
basicly what i am saying is it isnt the only guide you need in this area.
5)the damn cute pages.... thanks bill, you wouldn't want to do that bill.... etc etc... i could really do without those....
All in all i probably forgot something but that is generaly it. TGM is good for what it does. It is a club, and once you sort through the BS then you will get the info you want from the site and the members. Be polite and they will be the same to you. The articles are a good read, but lengthy and hard to nav. I would suggest it if you want another guidebook with a different prospective then the rest... another good thing about mike is that your subscription is good until a month after you return so if you are planning that trip for 07 get it now and have 2 years to read.....makes spreading out money for your trip easier... by the time you go you will forget you spent 20 bucks on the site. though i do get bummed when some jerk comes over here and spills some of his information, since i know i paid for it. but oh well.
sorry about gramar and spelling its late....
on a last note of a lengthy post that most people with ADHD will skip.... i don't really think you can knock it before trying it. Don't go telling others how horrible unless you know how horrible it is. Mike doesn't go slandering your buisness. please don't slander his!
****disclaimer I don't know mike, won't be buying the site again soon (i have as much as i need from the first time thanks!) and have no contact with any people using the site currently....