ublishing frequency for the whole communities as well as for the individual bloggers, while distinguishing between active developers (committers) and other bloggers.
The mean time between two successive blog posts within a community is 8.1 h
We observed that the committing frequency in all four communities is significantly higher than the respectiveblogging frequency
Committers had a medium blog usage time of 2.2 years. 75% of them have used blogs longer than 1.2 years. The medium usage time of other bloggers is 1.6 years, 75% of them have blogged for less than 2.6 years.
The median blog post length is 150 words (273 words average), which is about 14 times the median length of a commit message (11 words) in our data sets.
From all 50,701 studied blog posts we were able to find source code paragraphs in 5,745 posts (11.3%)