<p>How can I make an existing thread easier to find using certain keywords? </p>

<p>For example, today I had a question, "When does LASSO fail?". I searched this on Cross Validated and could not find an answer. However, with some effort I located a thread called "When wouldn't I use LASSO for model selection?" which essentially addresses the same question.</p>

<p>I would like to add "When does LASSO fail" to that thread somehow, so that other users could find that thread when searching for "When does LASSO fail?"</p>

<p>Is there a good way to do that?</p>
