I have a PB G4 which is my primary portable machine, used for note taking, web surfing and music production etc. If all goes to plan, my intention is to keep it through my four years of study. It occurred to me today that thanks to some well-established technologies, that really doesn't sound too far fetched. IMO, I think it all boils down to: USB 2.0 802.11x HTML5 I haven't really seen USB 3.0 being utilized much yet beyond storage. All peripherals and accessories these days are still USB 2.0 and a decent chunk of them still work fine on our PPC machines without any other drivers. My PB was actually the first laptop I had - so until then I had only ever needed a wired connection. I still find it cool that you can go to most places, sit down and relax, and have an internet connection. Everything revolves around the internet these days, and a working semi-modern wireless connection really aids these machines in continuing to be useful. Hand-in-hand with this is HTML5, which is dethroning flash in favor of a more open web standard. Thanks to the likes of TenFourFox, AuroraFox, Stainless and (I could go on forever) all your other favorites, we have up-to-date browsers capable of accurately rendering the latest websites without any compatibility issues. Included in this is are all the HTML5 APIs and media goodness (WebGL, WebSockets, workers etc.). What other technologies do you feel are keeping our PPC Macs running all these years later?