We've seen some pretty clear indications that the Kindle Fire was rapidly gaining market share among Android tablets, and ComScore is now out with a new report that indicates it recently crossed a big milestone. According to the research firm, the Fire's market share fully doubled from December to February, with it standing at 54.4 percent as of the end of the month. Counted together, the Galaxy Tab family sits in second at 15.4 percent, while the Motorola Xoom and Asus Transformer come in at 7 and 6.3 percent, respectively. Of course, the Kindle Fire isn't quite your ordinary Android tablet, so this is likely bette
