A huge challenge for user-generated websites is overcoming the chicken-and-egg problem: attracting users and contributors when you are starting with zero content. One way to approach this challenge is to use what Geoffrey Moore calls the bowling pin strategy: find a niche where the chicken-and-egg problem is more easily overcome and then find ways to hop from that niche to other niches and eventua

It has become customary to use “graph” to refer to the underlying data structures at social networks like Facebook. (Computer scientists call the study of graphs “network theory,” but on the web the word “network” is used to refer to the websites themselves). A graph consists of a set of nodes connected by edges. The original internet graph is the web itself, where webpages are nodes and links are

Your #1 competitor starting out will always be the BACK button, nothing else. – Garry Tan Suppose you have an idea for a startup, and then do some research only to discover there are already similar products on the market. You become disheartened and wonder if you should abandon your idea. In fact, the existence of competing products is a meaningful signal, but not necessarily a negative one.  Her

Tim O’Reilly poses a question every entrepreneur and investor should consider: are you creating more value for others than you capture for yourself? Google makes billions of dollars in annual profits, but generates many times that in productivity gains for other people. Having a positive social contribution isn’t limited to non-profit organizations – non-profits just happen to have a zero in the “

When having the “open vs closed” debate regarding a technology platform, a number of distinctions need to be made. First, what exactly is meant by “open.” Here’s a great chart from a paper by Harvard professor Tom Eisenmann (et al).: Screen shot 2010-04-25 at 11.18.00 AM (Eisenmann acknlowledges the iPhone isn’t fully open to the end user – in the US you need to use AT&T, etc.  I would argue the i