In March, a court told EMI it couldn't demand that MP3tunes turn over all the music stored by customers on its servers. Robertson writes on his corporate blog that the request is absurd:

Files are not MP3tunes' possessions any more than the contents of a safety deposit box are owned by the bank that houses them. The storage provided by MP3tunes is the user's own space. A Locker is empty when someone opens an account and that customer decides what files are placed into their Locker. All files are stored at the request of the user. People who choose to utilize remote storage should be guaranteed the same level of privacy they have for the files stored on their local hard disk.

As you may be aware, the major record label EMI has sued MP3tunes, claiming our service is illegal. You can read about the case here. Much is at stake — if you don't have the right to store your own music online then you won't have the right to store ebooks, videos and other digital products as well. The notion of ownership in the 21st century will evaporate. The idea of ownership is important to me and I want to make sure I have that right and my kids do too.

"Court Ruling Denies EMI Access to Millions of Personal MP3 Files" [MIchael Robertson]

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• 2. Rewards: Want both cash back and miles, but don't want to choose? Have one card for each.
• 3. Credit score boost: Your credit score takes an initial hit after opening any new credit line, but by maintaining a reasonable debt to credit ratio over two credit lines, you can actually improve your score over time.
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• 5. Easier bookkeeping: Save trouble during tax season by keeping all your business expenses neatly itemized on one card.
• 6. Leverage: Bankrate argues that you can use the favorable terms on one card to leverage better terms from other lenders. Threatening to leave for greener pastures doesn't require a second credit card. In fact, consumers can often receive better terms just by asking.

Do you keep more than one card? Tell us how you use the spare in the comments.

6 good reasons to carry multiple credit cards [Bankrate]
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