ASO Play Store

http://venturebeat.com/2012/06/28/android-app-marketing-and-google-play-what-you-need-to-know-a-preview/
http://searchengineland.com/the-most-popular-app-store-keywords-from-chomp-google-play-135744
http://www.apptamin.com/blog/optimize-play-store-app/
http://www.apptamin.com/blog/app-store-optimization-aso-app-name-and-keywords/
http://www.mobyaffiliates.com/blog/a-guide-to-app-store-optimisation-aso/