I’m pretty sure that most Linux users understand what jailbreaking the iPhone is. For those that don’t in short its a way of breaking the restrictions Apple put on your phone, which allows you to escape the sandbox and do more with the phone.
Sure, jailbreaking may void your warranty (or may not) but why would you want to do it? Well the first and foremost reason is freedom.
Some of the greatest organizations in the open source industry were spawned from the inability to work with a particular device. I think jailbreaking your iPhone is similar to this, while the tools are so easy to use that any one can do it, jailbreaking your iPhone gives you the freedom to do what you want with it and this is what its all about right?
Bash. We all know that Mac OSX is based off of BSD and it just so happens the iPhone is too. By jailbreaking your phone part of the default installation (depending on how you do it) is a terminal with a bash shell. Most Linux users should be right at home here with utilities like apt-get, aptitude and ping.
Perl, Python, Java, PHP. These are some of the languages that you can configure to run on the iPhone. Sure, they may need some tweaking (especially Perl.) But it can be done. Who said iPhone development had to be done in Objective C?
Along with the Bash shell comes the Open SSH package giving you the ability to SSH into your phone, should you choose to install and configure. This can come in very handy for the Linux hacker. The ability to pretty much manipulate your phone however you want is a great reason to jailbreak.
You’ve always wanted to be able to record video right? Well you can, that is if you jailbreak and install an application. While the video quality is not exactly up to par its better than nothing. You could even turn your phone into a robot if you wished.
Also, do it because the Woz says so. Well, actually he didn’t explicitly say to do it, but apparently he does advocate it and “hacked” some chick called Griffin’s phone. So come on, be that “Throbbing brain with a tie” and jailbreak your iPhone.