I am going to nit pick you a little bit but if you want a good reason to use Firefox, then here it is.

"built into Chrome" implies that Chrome is the only web browser.

Thank you! My goal was to make it as stupidly simple as possible in the first version.

I am also pretty surprised Google hasn't yet built something that solves this. When localStorage first came out, I was expecting a natural extension would be a way to sync it to a centralized store to avoid having state reset between sessions/devices.

Something tells me they'll be able to find the resources now to productize your code - or something like it.

Thanks very much for improving the landscape and the help pushing the boundaroes of webapps.

This is super cool.