honestly, I have made quite a few websites, all of them by hand in notepad, and the only browser that I have had an issue with is IE, EVERY other browser renders everything pretty similarly (even with a fair amount of javascript and embedded google maps and google earth plugin), except IE. I made a totally W3 standards-compliant webpage where chrome screwed up the page slightly, opera rendered it fine, firefox rendered it fine, and I had to add a hack to get IE to render it readable.
And yes, I am a geek, and yes I like open-source software, neither of those is a crime... yet. (and hey, open-source is the same price as piracy, but it's legal) and in fact, I even have 27 pieces of open-source software installed on my xp partition of my computer. And yes, standards-compliant is a very GOOD thing, browser-specific html tags, etc. is a very BAD thing. Not to mention, how come gmail has so many cool features and looks cool... on firefox.