As I’ve described in a previous post, this blog’s goal is to create and sustain relationships with readers across the startup landscape. Tuning the engine is proving much harder than I expected and I suspect that content marketers are facing similar issues. For example, over the past 18 months I’ve witnessed a halving of RSS subscribers to this blog. They have fallen from about 4,000 to about 2,000. I wasn’t sure what the cause could be, until I compared the RSS data with email subscriber data.