What are the rules and limitations regarding visa exemption entries to Thailand?

and this is coming up more and more because some consulate websites list the b/s 3 months in 6 or 6 months in a year imaginary rule.

It's the same imaginary rule that immigration officers use to deny people yet (or it's what they tell them anyway) but as Robert pointed out there is NO rule in Section 12 of the immigration act (the denial of entry section) that says "too much time on tourist visas or visa exempt entries).

Most people will not appeal the decision because it takes up to 3 days for the appeals process (not counting weekends and/or holidays) and you have to be in the airport lock up all that time.

My mate got turned away at Swampy a few weeks ago. Had gone for a weekend in Phnom Penh and had had 3 back to back one-month stamps. Was locked up for a night and forced to buy a ticket back to PP.

Good Luck

If you are planning to be here more than a couple of months during the year then you should look into getting a proper visa.

wrong. The only law they have in place is land border visa exempt TWO in one calendar year.