A great site unmasking the unscrupulous characters, charades and scams which can befall unsuspecting tourists.
The majority of Thais are welcoming and helpful but, as with any country, a minority is out there to take advantage of naive foreigners with loadsa' money (there are plenty of them, both naive and with cash).
I haven't had any scams pulled on me, unless you count my futsol team trying to put me in goal for a whole session (I'm good out-fueld, it's different to football you know, I'm still transitional, I will improve..honest). Those of us with Thai other-halves/close friends are generally safe from scams, especially with a bargain-hunting, go-getting Missus like mine!
The bottom line is the usual adage that tourists should be sensible and if something looks to good to be true/convenient, it may well be.
Check the site out and happy holidays in the Land of Smiles.
Update: you can also report a scam to alert others how you got played.