I synchronize my theme and settings between three PC's using rsync/ssh to a remote host, so *my* LS is pretty net-centric. ;)

I don't think it makes much sense to have your shell be a web-app, though, with the inherit latency and intermittent connectivity for most real world situations. Most of the other work that I do on a PC would not benefit from that approach, either, although the *results* certainly are made available online. There's always going to be a need for *something* at the far end of the pipe, no matter how fat that pipe gets. At least until they start implanting those direct neural interfaces. (And Microsoft is never going to touch *my* brain!)