<p>Anything that helps avoid problems with <kbd>windows-forms</kbd> vs <kbd>winforms</kbd>, and the regular <kbd>plzsendtehcodez</kbd> etc... ;-p</p>

<p>Of course, for the first example, <a href="http://meta.stackexchange.com/questions/2779/could-the-tagging-system-be-enhanced-to-support-tag-synonyms">tag aliasing</a> would be preferable. But the second is just noise and could be blocked.</p>