Five Best Blogs: September 2013

In this month’s five best blogs we saunter through Bill Gurley on transitioning to a mobile centric world, the WSJ’s survey of how entrepreneurs come up with great ideas, some amusing stereotypes of venture capitalists, one fund’s letter to start up CEO’s, rap aficionado Ben Horowitz on what do to in a cooling funding climate and, as a bonus, the crash of the cupcake market.