Blog Hits: Dirac Delta

The admin pages for this blog have a “sparkle bar” along the top that shows the hourly hit rate, which is usually a simple diurnal cycle: most activity happens during the Western Hemisphere daylight hours.

Yesterday was different:

Blog Hourly Hits - 2012-05-19
Blog Hourly Hits – 2012-05-19

In the space of about 10 minutes, my sleepy post about a bicycle saddle advertisement received 207 hits from “bike riding” at Yahoo! image search. For the last two and a half years, it’s been ticking along at about 1 hit/day, so I think that spike represents a nice example of a Dirac Delta Function in action.

I no longer even pretend to know what’s going on…