Apache on Symbian. Just imagine what you could do with that (updating walled gardens in poor connection areas for example). Now if only I was smart enough to install and try this thing myself;-)

This from the Nokia faq page:

In general, it is better not to think web server that happens to be on a mobile device but instead personal context-rich mobile device with HTTP access to it. Technically they say the same thing, but the latter alternative describes much better what this is all about.