For a while I've been thinking about posting something to this nature to test the useability (and the owners) of PPC Macs. I thought us here on the PPC section of MacRumors could start using only PPC Macs for a certain amount of time. Each time someone finishes their turn, they could nominate someone else to take on the challenge. Post ideas below, I'm open to critics/new ideas! I need help deciding on the time frame, so help would be appreciated!