Estimated time drivers save by using real-time GPS traffic updates
Drivers that use GPS systems with real-time traffic info spend 18% less time behind the wheel than those who do not.
Now that we've thrown 'em off the trail, use the form below to get in touch with the people at Engadget. Please fill in all of the required fields because they're required.
That's what Twitterific has done. Excellent model in my opinion. Have one premium edition (ad-free and hopefully some additional features) and the basic edition (ad-supported, fully functional but maybe missing some "premium" features).
This is especially a good model for the AppStore since there is no way to trial anything.