What were some of the most successful virtualization implementations, and what made them successful – other than cost savings?

That's the question for ReadWriteCloud's October contest. The prize? A light, sleek MacBook Air. All you need to do is submit the best comment right here on this post, and you'll be taking home a MacBook Air – just like Julie Begey, who won the September contest. Participating is easy, you just need a Disqus account, and make sure you follow the rules.

We know ReadWriteCloud readers have been tackling virtualization projects for years. Now you have a chance to cash in on that experience by telling us which implementations have been most successful, and why. We all know that cost is a huge factor, so go a bit deeper (as Begey did with her response in September) and tell us more.

To win, you need to comment by October 25th. We'll announce the winner shortly thereafter. You can't win if you don't respond, so fire up the keyboard and let us know what made your most successful virtualization project a winner. We're eager to read your responses!