<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://meta.stackexchange.com/questions/45438/a-proposal-for-tag-hierarchy-on-so">A proposal for tag hierarchy on SO</a>  </p>
</blockquote>



<p>Since so many thousands of tags and topics exist, it would be really useful to visually browse through tags by organizing them into a <a href="http://en.wikipedia.org/wiki/Portal%3aContents/Portals" rel="nofollow">hierarchy</a>, or hierarchical map. This drill-down map would make it easier to find the tag/subtopic you want or just generally browse within the topics you're interested in.</p>

<p>So we could nest all "visual-studio-2008" and "visual-studio-2003" tags into "visual-studio", which would be under "dev-tools". Something like how Wikipedia's categories have sub-categories. </p>