Yesterday's iTunes update continues the recent tradition of adding marketing features instead of, well, real features. When you start it up for the first time and see the "MiniStore" that appears at the bottom of the main window, don't panic -- just hit Cmd-shift-M.
Throw out those bootleg copies, the official release of Google Earth for the Mac is here. It's nifty. Requires 10.4 for the moment, unfortunately. I blab more about it here.
Migrators to Apple's new operating systems talk about their experiences. Some of them come from Classic MacOS, some from Windows, and some from other Unixen.