[wensing]

But the person that suffers is the visitor. That should therefore be their own choice.

Sheesh - I bet many of these developers also think you should have the right to do whatever you want with your body as long as it doesn't harm anyone else ... but an outdated browser (?!): NO!!

[melling]

That's not true at all. Many developers are forced to waste their time supporting old browsers, or omitting features, because they still have significant market share. The good news is that FF 3.6 is nearing 1% market share so the support will soon stop.

http://gs.statcounter.com/#browser_version-ww-daily-20120728...

Expect to see lots of problems with FF 3.6 by the end of the year. Especially once developers stop using the FF specific CSS selectors: -moz-