Scalability stories are generally interesting, as they're about solving problems that out-of-the-box commercial software doesn't. They're interesting to hackers

Scalability stories are generally interesting, as they're about solving problems that out-of-the-box commercial software doesn't. They're interesting to hackers, not all of whom are entrepreneurs. If you'd like to share a story, however, on using statistical techniques to measure and act on virality, doing multi-variate testing, et al that would be very interesting.