AT&T is now offering a new application for the iPhone that provides voice activated turn-by-turn navigation. Given that wireless carriers love to capitalize on regular monthly fees charged to consumers, it’s not too surprising that the new app costs $10 per month. The new app makes it among the first apps to make use of the new in-application payments that are allowed in the iPhone OS 3.0. What you get for the monthly fee is obviously what’s important. First off, the application is voice activated in that