<p>[Based on my comment.]<br>
We also have <a href="https://stats.stackexchange.com/questions/tagged/best-practices" class="post-tag" title="show questions tagged &#39;best-practices&#39;" rel="tag">best-practices</a> and <a href="https://stats.stackexchange.com/questions/tagged/rule-of-thumb" class="post-tag" title="show questions tagged &#39;rule-of-thumb&#39;" rel="tag">rule-of-thumb</a> (and even <a href="https://stats.stackexchange.com/questions/tagged/expertise" class="post-tag" title="show questions tagged &#39;expertise&#39;" rel="tag">expertise</a>, which was used only once!). Since the purpose of this site is to provide guidance, expert opinion and thoughful recommendations, I don't see any interest in keeping the <a href="https://stats.stackexchange.com/questions/tagged/recommendations" class="post-tag" title="show questions tagged &#39;recommendations&#39;" rel="tag">recommendations</a> tag alive.</p>

<p>As @Nick pointed out, there is no connexion between 'recommendations' and 'recommender system'. I would suggest killing the <a href="https://stats.stackexchange.com/questions/tagged/recommendations" class="post-tag" title="show questions tagged &#39;recommendations&#39;" rel="tag">recommendations</a> tag, and cleaning up the aforementioned threads. </p>

<p><strong>Edit (6 Sep.)</strong><br>
I've removed the tag from the remaining threads. <strong>It can safely be blacklisted now.</strong></p>
