"We're number two" might not be the chant everyone's after, but we have a feeling that Google is more than satisfied with that in this case for now. According to market research firm NPD, Google's Android operating system edged up into second place in the US smartphone market during the first quarter of the year, leaving it still well behind RIM's BlackBerry OS, but marking the first time that it has moved ahead of Apple's iPhone OS. Specifically, NPD found RIM to maintain a strong 36 percent market share, with Android coming in at 28 percent, and iPhone OS in third at 21 percent. The growth for Android was attributed largely to strong carrier s