Monica Rankin posted a video to YouTube about how she uses Twitter in her classroom at the University of Texas. Somehow this Monday morning the video showed up on the page of the most popular bookmarks for the day on Delicious. It had only been viewed 425 times and neither Rankin nor we could figure out how it got bookmarked so much in that one random day. It's a very good video though, so we wrote a blog post about it that saw an unusually high 12,000 views within 24 hours. We decided to pay very close attention to where those readers came from, just to see what we could learn, and some unexpected trends emerged from the data.