In reply to the peeeeceee comment, without them we would all still be using mac Lisa's and probably still paying $KKK for them!
Yes, people still are using Mac Os 8.6, even 8.5, 8.1, 7.5, 6.x ... Why not. If it ain't broke, why fix it. Mac Os 8.x-9.x is a versatile and stable OS. As a matter of fact, I just purchased a complete 7600 for my 2 year old that dual boots Mac OS 9.1 and YellowDog Linux. The best of both worlds for approx. $US50.00 !