At the Worldwide Developers Conference in San Francisco this week, Apple introduced iCloud, a set of free new cloud services that work with applications running on numerous devices automatically. In addition to being able to send content to iCloud automatically and wireless from your iPhone, iPad, iPod touch, and Mac, the service also works with your PC. iCloud’s robust features could make it a game changer as it takes on competing offerings such as Microsoft’s Office365 and Google’s Small Business Apps. Users can sign up for iCloud for free on an iPhone, iPad or iPod touch running iOS 5 or…