By Jim Karpen
In a sense, one can think of iCloud as a third platform, one that complements the desktop and mobile platforms, and that may eventually subsume them. It'll be interesting to see how this evolves. Macworld has a great article titled "iCloud: What you need to know." TidBITS also has a helpful introductory article, with a focus on iTunes in the Cloud — the only feature of iCloud that is now available.