"When I look at web addresses I have a little internal dialog that runs and when I see the .html extension I figure the page was designed on a Mac."


Not always so, I have often used .html and I've never used Macs. I got that when I first learnt html, from someone who objected to the MS 3-character limit and deliberately used '.html' to show his objection to MS attempts at world domination. I followed his example, and I know there are many others who do.