Correlation is not causation but...
I have crunched the numbers and calculated the average length of blog posts on I Thought He Came With You vs. how many children I had at the time the post was written.
(Related: Better related posts with word2vec (C#); Catfood: Klout and Follower; About Hikes)
(You might also like: Buena Vista Park; New Scientist on Immigration; Goodreads Feature Request)