While I looked around for the Dropbox for my G4 machines (Powerbook G4 1.5, MDD 2 x 1Ghz & Powermac G4 1.2Ghz), since @Czo had stopped updating his Dropbox magic, I found two alternatives that can sync what I type in my Powerpc realm to the current world of two-way aunthentication.
1. I use...