We already know how Apple feels about tethering, which is sometimes Apple-legal and sometimes not. However, for jailbroken phones you now have what is promised as a quick and easy way (10 second-easy, that is) to tether your laptop to your iPhone.
On Saturday, Addition released iPhoneModem for iPhones using the Cydia package manager. Apple has been dragging their feet in responding to their application request, so now you can get it as shareware for only 10 bucks.
Ten bucks for ten second ease. Consider this your PSA for the day. Check out the forums over at ModMyiPhone for a quick rundown of how it’s working. (Hint: Very good)