How would you define "success"? Forbes publishes a ranking of accelerators based on financial results, and YC was #1 for what it's worth: http://www.forbes.co

How would you define "success"? Forbes publishes a ranking of accelerators based on financial results, and YC was #1 for what it's worth: http://www.forbes.com/sites/tomiogeron/2012/04/30/top-tech-incubators-as-ranked-by-forbes-y-combinator-tops-with-7-billion-in-value/ http://www.forbes.com/sites/tomiogeron/2012/04/30/top-tech-i... "The rankings are based on a number of factors, focusing on the value of the incubators’ companies. In other words, we took the exit prices or the last priced equity valuation of the companies that have gone through each program. We also took into account other measures, such as how much venture funding their companies have raised, what percentage of their companies have raised funding and what percentage of their companies have been acquired or gone out of business."