I agree--My current weak understanding of HTML is partially due to the fact that browsers are (IMO) too darned laid back about accepting incorrect input. I tend to pay attention to syntax (due to MUCH coding in ASM, C, C++), but only learn it by being hit over the head with error messages. If browsers were more strict, we'd have less crappy websites on the net. (And I'd be responsible for less crappy HTML in my projects!)
While reading this thread, I noticed that there are some error-checking options in PM, so I've just cranked 'em up to the maximum. Maybe I'll finally learn the nuances of some tags!
...roboticus
