I had to fiddle with the dates to find a couple examples of blogs that violate the single-author rule in the methodology (marginalrevolution, ribbonfarm) but it's probably better to have them included.

Even though a glance suggests the majority of high-scorers are self-hosted, I wonder if this dataset is valuable for predicting the strength of different blog hosts. Some fiddling did lead to a couple results that are hosted on Blogger or Ghost or Medium, so they are there.