The statistics look great, but they aren't entirely correct. Due to a test that went wrong, the number of hits on May 4th is higher than it should be. Many of the hits on that day were "self-inflicted". Too bad, we'll have to do with the numbers we have.
That's the Thanksgiving dip, but... there's more. The dip is also caused by the move to our new web site. Incidentally, we forgot to change the Google ID we used on the test and staging server, so plenty of visits weren't counted for about 16 hours last Thursday/Friday. But hey, let's not whine about that: we finally have a new web site!