How-To Tuesday: How to enter the iTunes contest for free: “The iTunes Music store from Apple is celebrating their 70% worldwide market share of legal downloads by having a contest to count down to the 100 millionth song with some great prizes like iPods, Powerbooks 10,000 free songs, etc. You’re automatically entered when you buy a song from iTunes, but we’re going to show you how to enter for free in this week’s How-To.”