What other bar were you hoping for? It&#x27;s advertising. The fact that it works better than other kinds of advertising is a pretty relevant bar.<p>FWIW, since we&#x27;re doing anecdata, I just checked my Amazon front page. Many things are irrelevant, a few comical (I recently looked at a 80-book box-set of Penguin classics[1], now it&#x27;s systematically recommending each individual member of that box-set to me :-&#x2F; ) -- and a few are quite relevant and I clicked on them to check it out.<p>1: <a href="http:&#x2F;&#x2F;www.amazon.co.uk&#x2F;Little-Black-Classics-Box-Penguin&#x2F;dp&#x2F;0141398876&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.amazon.co.uk&#x2F;Little-Black-Classics-Box-Penguin&#x2F;dp...</a>