Cell Phone Web Servers

Nokia has announced that they have ported the Apache webserver to their Symbian OS that runs most of their cell phones. So, you can have a web server on your cell phone. Nokia has some ideas on what this could mean application-wise, but I don't know. All I can think of is denial of service attacks screwing up your cell phone not to mention other web server security issues. Am I going to need a firewall on my cell phone now? Most of the time, I just want to make a phone call. This may be going a little too far.