MobileMe, Apple’s web-based service for syncing data between computers and iOS is taking off in popularly. A good reason for that is the very useful “Find My iPhone” feature, but the MobileMe webmail has likewise taken off in popularity.
devices mail, contacts, and calendar information in the cloud and uses push technology to keep everything in sync across your iPhone, iPad, Mac, PC, and the web automatically. So no matter where you go or which device you use, all your information is up to date — no docking required
Also, see this article :“About naming files for sharing.“http://docs.info.apple.com/article.html?path=Mac/10.5/en/hpg21.html