Hi,
I posted research about the factors that may impact English Wikipedia Did You Know article traffic on the day. Because the research is a bit long, a copy of it can be found at http://meta.wikimedia.org/wiki/Research:Anatomy_of_English_Wikipedia_Did_You...
Summary: This research examines the traffic of 544 English Wikipedia Did You Knows to try to determine which variables play a role in the determining the number of page views an article will get on the day. It largely concludes that the number of dependent and independent variables make it to difficult to isolate specific reasons why one type of article performs better than another, though there are some general time and topics that will likely result in greater views.
Any feedback is appreciated either here, on the research talk page or privately.
Sincerely, Laura Hale