Just said goodbye to my unlimited data on iPhone

With the release of iOS 4.3, the new "personal hotspot" feature made it very attractive to switch from my grandfathered "unlimited data" plan to the slightly higher-priced new data plan.  My only concern was hitting the new 4GB monthly limit.

I checked my past data usage and over the past year I've never even used 1GB in any given month.  If I recall correctly, I hit 1GB once about 2 years ago.  That said, I wasn't using that connection for anything other than content on the phone.  The data usage will almost certainly increase once I start actually using this new feature.  I'll have to keep an eye on it, since once the monthly usage exceeds 4GB, the overage fee is $10 per GB.

So I pulled the trigger and switched.  I think it'll be useful to have a WiFi connection virtually anywhere.  Stay tuned.

NOTE: I know I could've used this feature without an additional cost by jailbreaking the phone, but since I rely on the phone for business every day, I don't want to take the (admittedly minimal) risk.

UPDATE: Apparently AT&T has begun "cracking down" on unauthorized tethering...