This complicates our analysis because this arrangement causes
the redirect itself (‘‘Flu’’), not the target (‘‘Influenza’’), to appear in
the access log. While in principle we could sum redirect requests
into the target article’s total, reliably mapping redirects to targets is
a non-trivial problem because this mapping changes over time,
and in fact Wikipedia’s history for redirect changes is not complete
[98]. Therefore, we have elected to leave this issue for future work;
this choice is supported by our observation below that when target
and redirect are reversed, traffic to ‘‘Dengue fever’’ in Thai follows
the target.