Is there a reason this is pointing to the URL http://mattmahoney.net/dc/dce.html?year=2011 http://mattmahoney.net/dc/dce.html?year=2011 instead of just http://m

Is there a reason this is pointing to the URL http://mattmahoney.net/dc/dce.html?year=2011 http://mattmahoney.net/dc/dce.html?year=2011 instead of just http://mattmahoney.net/dc/dce.html http://mattmahoney.net/dc/dce.html ?