Identify authoritative forums/ web sites/ blogs discussing app analytics

Preliminary list of sites for marketing our app analytics solutions. Goal: Identify authoritative forums/ web sites/ blogs discussing app development and app analytics for www.opentracker.net. We are looking to identify authoritative forums/ web sites/ blogs. We want a list of at least 20 web sites/ blogs/ forums that discuss app development and more importantly app analytics. We want the list to be ranked by the number of posts/ activity. eg. 1. [login to view URL] 31 posts yesterday 2. [login to view URL] 3 posts yesterday 3. 4. 5. 6. 7. 8. 9. 10. 11. .... Please feel free to pose any questions to help improve the work delivered.