We just heard that T-Mobile  is going to roll out a $14.99 per month tethering option for its users starting Nov. 3rd.  Depending on your 3G or HSPA+ device, you will be able to tether and / or use your device as a wireless hotspot.  In order to use the tethering service, T-Mobile customers must have an unlimited web plan of at least $19.99 per month.  The $14.99 monthly tethering fee will be added on top of that.

This service might actually be kind of cool for non-BlackBerry using T-Mobile subscribers that don’t need a dedicated mobile broadband device with it’s own monthly data plan, however, a tethering option for BlackBerry users with a monthly fee is a horrible idea when you could just purchase an application like Tether for BlackBerry once.