<ol>
<li><em>Maybe</em>, I think it depends on whether it would successfully group enough threads to usefully contribute to the organization of the material on the site (see below).  </li>
<li>We have several "mixed-" tags already, which naturally creates the potential for confusion.  My preference would be for the name to be as distinct as possible, and the excerpt to delineate its usage clearly and up-front.  My suggestion for the best name might be <code>[mixed-data-types]</code>, although something else might be better.  </li>
<li>If the tag is circumscribed to only apply to questions about mixed data types in clustering and PCA, e.g., I think it would be too narrow to prove useful over time (see #1, above).  If it would be applicable to questions about combining continuous and categorical data within regression models, e.g. (and you think those types of questions will emerge), then I think it may end up proving useful.  </li>
<li>(Hmmm, I'm a man of few thoughts, I'm afraid.  I would that it were otherwise...)  </li>
</ol>
