At this point it pretty much goes without saying that TomTom is one the most widely used GPS services on the market. As part of this expansion, they brought their prowess in the navigation world to iOS. As one might assume, this was a lucrative decision for the company that has paid off for consumers tenfold.
One thing that TomTom has been great about doing is updating their software with different and unique pieces of functionality, features lacking in the competition. At CES they previewed their upcoming 1.10 update, and the name of the game is social networking. The core software will now link up with Twitter and Facebook to share destinations and arrival times, all without ever having to leave the application. Heck, they even made this data available for transfer via text message and email as well!
While this is not exactly in the realm of transportation directions, it certainly makes interesting uses of features already on iOS devices. We will have more information on the update when it nears release sometime this quarter. Until then, keep both hands on the wheel.