YouTube recommendations have been <i>improving</i>, and I <i>do</i> find a lot of material of interest, which says something as my interests are obscure.<p>But, and this is a big but:  YouTube doesn&#x27;t provide the options to either <i>dismiss</i> any given suggestion, nor to <i>block</i> specific channels.  There&#x27;s sufficient <i>crap</i> on YouTube that both are essential.  I&#x27;ve been campaigning for both features for some time now.<p>Google&#x27;s recently implemented an account-wide blocked-users manager.  It applies now to G+ and Hangouts, though it may move beyond that.  &quot;Google doesn&#x27;t comment on future plans&quot;, as they&#x27;re fond of saying.  I have hopes.