I wrote a blog post about how Android Market needs gift cards.
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As of today, the only valid purchasing method on the Android Market is the use of a credit card. Android needs gift cards to expand access to the Android Market. If there were gift cards, people could gift apps and more people (especially the young) could buy apps. I am more likely to buy an app with a gift card than my own credit card. iTunes gift cards are everywhere (literally in almost every store) which increases exposure to Apple's brand. Google needs this too!