<p>Blacklisting a tag removes all occurrences of it from the target site and prevents anyone from ever using that tag again.</p>

<p>Tags must be "quite bad" to be blacklisted. Generally, these are tags that could <em>never</em> convey any useful information or are actively harmful to the site. Because of the potential consequences of getting something wrong, only the dev team is able to add tags to a site's blacklist.</p>

<p>See <a href="http://blog.stackoverflow.com/2010/08/the-death-of-meta-tags/">The Death of Meta Tags</a> for a discussion of what makes a tag good or bad.</p>

<p><sub>Reference: import excerpt and wiki from the main <a href="http://meta.stackexchange.com/tags/blacklist-request/info">Meta Stack Exchange</a> site.</sub></p>
