Showing which hour of the day (0-23) I post.
Compare 2004 and 2000: now that I'm working, I apparently post more in the day rather than the afternoon and go bed earlier.
Note the boxplots are still weird because of 0. (See this comment.)
In fact, now that I look at this and think about it more, the boxplot doesn't make much sense anyway. I think it's showing the distribution of counts per hour per year? So the dot at 60 over hour 14 just means that in one year, I posted 60 times in hour 14. But that means the tops of this graph will be biased towards 2000 because I posted more then.