What happens when you use a WYSIWYG editor to build your web page, and then you click one of the format buttons over and over? You get code that looks something like this:

<BIG><BIG><BIG><BIG><BIG><BIG><BIG><BIG><BIG><BIG><B><BIG><BIG>
Home Building Manual
</BIG></BIG></B></BIG></BIG></BIG></BIG></BIG></BIG></BIG></BIG></BIG></BIG>

Nice, huh? Well, what happens when you view it? IE incorrectly ignores the extra tags, thus encouraging bad code. Here’s the page in a 1024 x 768 window in IE.

But view the same page in FireFox, which correctly and dutifully obeys the rotten HTML code, in the same 1024 x 768 window, and you get something like this.

To be precise, that’s 814 px font. Now, THAT is BIG!

Here is the actual page. See for yourself.

(Link via Randy Pants.)