I tried TGM and I'm not going to tell you what I thought of it. Yes I do have an opinion about the site - a pretty strong opinion as it happens. But I'm not going to share it with you.
You see, I happen to know that TGM readily offers full refunds. No explanation required, ask for a refund and you will receive it. The implications of this policy really should make any debate on this subject moot. Since there is absolutely no financial risk in trying TGM for yourself, the only thing you risk losing is the time it will take you to look around TGM once you have signed up. If it's not for you, get your money back. Its a pretty simple concept folks.
Some people like TGM, some don't. I have no idea which group you will fall into. And neither do you, at least until you give it a try yourself. And since we've already established that there is no risk in giving Tour Guide Mike a try, thats exactly what you should do. Make up your own mind. You don't need me or anyone else battering you over the head with our opinions as long as you have the means to come to your own opinion.