Get Your Freaking Stats Up First
You really have to get your stats up before you can meaningfully engage in growth hacking. These are some average ABGD site aggregate analytics. We have 5000 sessions a month with fairly low bounce rates and substantial session time. We are not impressed with typical lean start ups that think they can deduce worthy insights from 300 users or so and paltry session times.
The metrics above have been achieved exclusively through growth hacking and ZERO marketing. We are now ready to get really serious with KISSMetrics to measure people and not just page views. Keep in mind, however, that you need page views to measure before you waste time with people.