Who says that Blackberrys should dominate the business market? Aside from being pretty cool and fun to use, iPhones can also lend themselves to the business world. In fact, the App Store is bursting at the seams with useful apps for the suit-wearing, executive iPhone user. But which ones should you go for? Which are a waste of time? Click the link below to discover five of the App Store's most useful iPhone apps for business networking.