Well, it's only a test if you have display of images on in a browser like Netscape. I put this page up because I hate Netscape, or more precisely people who think that everyone uses the browser, and thus act much like the cliched American tourist -- if you can't speak their language, you haven't anything of worth to say. As such, this page's purpose is to point out the shortcomings of such iniquitous practices as Netscape-only page creation.
The most important is that of relying on Netscape's bugs. The most infamous of these is the missing-quote bug in the 1.x versions, so that a link like <A HREF="broken.html> would display correctly in Netscape, but produce confusion in other browsers as quotes pair themselves up in unusual ways.
The other is that of relying on Netscape's features. Frames are a wonderful innovation for making one's pages look better, but remember that not everyone uses Netscape 2.x. Related to this, but not Netscape specific, are people who have as their homepage a single imagemap. Some people access the web through lynx in a dialup account, and [IMAGE] is not conducive to getting information. If you're guilty of this, include the equivalent links in normal HTML after the image, please. Also, don't forget that <IMG SRC="foo.gif" ALT="A foo at a bar"> will show foo.gif if images are on, 'A foo at a bar' otherwise.

Remember, the point of putting up your wonderful pages for all to see, whether for commercial or personal reasons, is so that everyone can see your creation. Flaming those who don't have the correct browser to view your page will only serve to reduce the number of people who see it.