Agreed, a wide range of browser support doesn't appear to be one of the outstanding features.
"
Error
You are using IBrowse. Amiga rulez!
aSCIIaRENa utilises functions not present in IBrowse.
Please Upgrade to FF 3.5+, IE 8, Opera 10 or later.
a href=http://www.mozilla.com/en-US/firefox/all.html>Download Firefox 3.5 here!
"
OK, it tells me that my computer "rulez" and then tells me to upgrade to a web browser which doesn't run on it. Nice. I don't own an IBM clone so I can't see what the site is about, but surely the prime benefit of ASCII art is that it's viewable in anything? Hell, I'd be expecting it to work in Mosaic! 
I am using Origyn and my OS4.1 machine and it told me I was using Safari and to basically go away and get a real browser
