I was a backpacker in Thailand in 1992 - it's true what you say, those were the good ol days and you could have as many entry stamps as you wanted. Nowadays I'm outa touch completely with all those visa issues, I have a business visa and work permit and renew it every year. Part of me thinks though that Thailand will always have backpackers because it's still a wonderful place to visit!@
RE: The rise and fall of Thailand as a backpacking destination