Wow

While securing my website by blocking access to wp-admin folder, i accidentally disabled client-side slimstat analytics. I opened a case with them (as a free plugin user, that is!) and got a to-the-point response in a matter of a few hours. Unbelievable and well worth this review as my token of appreciation.
B.t.w.; you need to grant access to /wp-admin/admin-ajax.php for slimstat to work with (default) client side statistics.