Actually it's there - if you click on "Take a free demo test" (http://codility.com/demo/take-sample-test/ http://codility.com/demo/take-sample-test/) on the Cod

Actually it's there - if you click on "Take a free demo test" (http://codility.com/demo/take-sample-test/ http://codility.com/demo/take-sample-test/) on the Codility page there is a free test and you will be given the option to tweet your result at the end.