I really like this in a cyberpunk-kind-of-way, but think it's impractical from a data usage perspective + the fact that your ip should change frequently on any mobile device.

In the abstract, I feel like editing a file on your phone vs. editing a file somewhere "in the cloud" isn't so different if the interface makes it indistinguishable, so I don't know if you get any real benefit to toting around your webserver...

but I like the notion of a homegrown, self-managed webserver that you keep in your pocket.