I remember the idea of "cellphone as a server" being around as far back as in Symbian times. Nokia Mobile Web Server, more than just an idea, actually was an Apache port capable of loading modules and running Python scripts on your phone (e.g. in order to access the camera) and serve dynamic pages on your DDNS-reachable mymobilesite.com subdomain.

The original project website appears to have been axed, but there's still traces of people who used to talk about it: http://www.allaboutsymbian.com/features/item/Previewing_Noki...

>MWS, in its default install, comes with a default pre-configured web site which has a number of functions, including a guestbook, a blog, the ability to send SMS messages to the phone, share Calendar information, view contact information and access the phone's camera.