Hey guys, I'm the proud owner of a brand spanking new /white/ iPhone 3GS. I moved to AT&T from VZW and a droid (this phone is MILES ahead of android in terms of OS usability-especially since I have a Mac, the syncing is seamless). I got really lucky and the phone was a 3.1.2 (bought it a few days ago) so I was able to JB (tethered). I started playing around and tried out MyWi for the wifi tethering and it worked awesomely with my MacBook. Here's my question: I noticed that under settings>general>network, I have an internet tethering option that uses USB or Bluetooth. Is this a hack that was enabled inadvertantly through something I did in the jailbreak process, or is this an AT&T feature that I will be charged extra for using? I'm curious because this seems like a cleaner approach since it's built into the OS. Thanks guys!