<p>Occasionally I have done a search like this:</p>

<pre><code>smirnov -[kolmogorov-smirnov]
</code></pre>

<p>to locate posts that mention a word that's likely connected to the tag, but doesn't have the tag. </p>

<p>The <a href="https://stats.stackexchange.com/questions/55689/kolmogorov-smirnov-and-bootstrap">second post</a> that it turned up, for example, appears to be a possible candidate for having the tag added.</p>

<p>I do this for a variety of reasons, but one is simply to add tags to posts where I think they need it so people can find them more readily, for example. (More selfishly it helps me locate posts I feel like answering at the time that I won't have found in previous forays with the tag.)</p>

<p>I was just doing this kind of search with the <code>histogram</code> tag now, and added a few (not every post that mentions the word needs the tag however and I am sometimes left to ponder when it's reasonable to add and when it isn't. This post is not about that quandary).</p>

<p>It occurred to me that maybe there's some issue with specifically <em>searching</em> for missing tags and (sometimes) adding them in this manner. </p>

<p>It's not something I do all the time, just now and then as the mood takes me (usually after noticing what seems to me to be an important but missing tag on a post).</p>

<p>So is there anything out of order with that kind of behavior? Is it a good idea? A mix?</p>

<p>---</p>

<p>Edit:</p>

<p>A big thanks to AndyW and gung for their insightful, helpful, high quality analysis, and useful links.</p>

<p>By way of summary so far - </p>

<ul>
<li><p>there's a problem with doing it for a single tag on a large number of posts without consultation </p></li>
<li><p>even with a smaller number of posts, there's a problem with doing it on more than a couple at a time in quick succession because of the impact on the front page - so it should be well 'spread out' in time.</p></li>
</ul>
