Sources: ChevronWP7, The Verge
quote: Like Apple (and unlike Google), Microsoft charges developers a fee to get access to its SDK and applications market. Its asking price is $99 USD per year. Of course for beginning devs this isn't the friendliest approach as it doesn't always make sense to pay $99 USD a year if you don't know XNA/C#/etc., and won't be able to release commercial product for a while.
quote: This keeps people from releasing 50,000 Fart and Flashlight apps because of the fee. You might as well develop something worth while if your going to pay a fee. If it were free bring on the fart, flashlight, and useless crap.
quote: So overall I don't see the legitimate developer purpose of this tool. 10,000 tokens have been given out... so where are these 10,000 developers? With only ~50k apps on the market, I doubt there's 10k serious developers in total.