Hey Apple, listen up.  You have someone on your tail and they are catching up, rather quickly.  We learned this morning that the Android Market is now home to some 400,000 apps, with almost 100,000 developers on board creating all those apps.  Google hit 300,000 apps in their store in only 4 months, with 400,000 coming another 4 months later.  In comparison it took Apple 8 months and 7 months to hit the same milestones.  Placing bets, when will we get to 500k?

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