Thats reassured me a lot
I don't work with a mac, but I will make sure to keep filenames well under 31 just in case I do in the future - if that 31 figure includes the .html then I would have to be 26 characters max for the actual wording of the file - is that correct?
How old is OS 9? Is it safe to assume that in a couple of years time nobody will be using that - if that is the case, I won't worry about it - I can't see me using a mac anytime in the near future
After reading other posts here, related to SEO, I don't think I will be anywhere near the limit for the total URL - the general advice seems to be that shorter URL's are better for search engine placement.
However, there does seem to be a large difference of opinion about how long URL's can be before search engines penalise you
So I know that I could happily have a total URL of 80-90 characters length - technically - but would I want to?