My mother uses PowerPC all the time, as a full-time personal computer! She has a MDD G4 running OS 10.4, and uses Firefox/Camino/Thunderbird/Netscape with minimal problems. I keep trying to get her to switch to something more modern (you know, so I don't have to constantly fix issues on the ancient machine) but for whatever reason, she will not. Guess I'll have to wait until the thing dies, sadly!