I'm about to head down to best buy and buy a 2nd gen ipod touch. I've read a few threads but am still unsure about the hardware needed. 1. Do I need to buy a mic or does it have one built in? 2. It seems like the 2nd gen will work as a phone without being jail broke..is this correct? 3. I've searched a bunch of threads but can't find any info about jail breaking. I just want a some general info on what is jailbreaking and what are the benefits of doing it. 4. I guess that is it for know. Finding out the itouch can be used as a phone is what really made me decide to go out and buy it...that such a cool feature.