Yes, the NetScape 4.7 trip was just to see what would happen. I really didn't think things would be quite as bad as they turned out, but I expected pretty awful from the outset and I wasn't disappointed ;o)
This all came to light recently when I inherited a few sites with glaring issues. Abuse of the capabilities of various WYSIWYG editors to produce something visually impressive in IE had resulted in something that looked shocking in some other browsers.
I realise that IE has the majority market share, but it seems ludicrous to deliberately ostracise other browser users when in most cases it is not necessary to do so.
If anyone wants a humbling experince, try running your shiny new site through NetScape 4x and see what happens.
Be very, very afraid.
And then be thankful that pretty much nobody uses it any more.