Google are celebrating, big style, they have just had their 10 billionth app downloaded from the Android Marketplace and to mark this poignant moment they have announced that they are dropping the price of some top selling apps to just a dime or in UK terminology, 10p each. The Android Marketplace is seeing huge growth very quickly, it has only taken one month to go from nine billion to 10 billion downloads. Although Apple is still leading the pack, they announced their 15 billionth download in July 2011 but Android is really catching up fast. Geoff Blaber an analyst for CCS Insight predicts, ‘we’d expect Android to overtake Apple in…