Iraklis

Actually this was pretty simple to implement:

add this after line 21 of scroll-back-to-top.js

$(window).scroll(function() {
  clearTimeout($.data(this, 'scrollTimer'));
  $.data(this, 'scrollTimer', setTimeout(function() {
    $('.scroll-back-to-top-wrapper').removeClass('show');
  }, 2000));
});

Now it just needs to be implemented in the options page

Ricard, is that a design decision? (privacy implications etc)

If I find enough time I’ll create a fork that uses a simple cookie based tracking method.