I had been wondering what impact my friending 200 people from my Gmail address book had, so I scraped the dates from the notification emails.
The plot shows notifications of friend requests from other people to me in black and confirmations of my requests to other people in red. That sudden and sharp increase at the end of the graph is from when I friended 200 people at once on May 17.
I also took the dates from all of the other types of notifications that I have Facebook send to my email. I’ll have more cool results from these data and from different transformations of the data. Interesting trends should appear when I take derivatives.
I’m also thinking about other ways to stratify the data. I could plot notifications by time of day or person. Maybe I should get the number of pictures I was tagged in in addition to just whether I was tagged. I should also plot total notifications of any sort, not stratified.