Perhaps. But smart people know that this is good analyis: http://www.avc.com/a_vc/2009/10/the-cohort-analysis.html http://www.avc.com/a_vc/2009/10/the-cohort-a

Perhaps. But smart people know that this is good analyis: http://www.avc.com/a_vc/2009/10/the-cohort-analysis.html http://www.avc.com/a_vc/2009/10/the-cohort-analysis.html