title: Dashes vs underscores in URLs for SEO
body: <p>What do search engines presently prefer us to use as word separators in URLs: dashes or underscores? Should I use <a href="http://example.com/dash-underscore" rel="nofollow noreferrer">http://example.com/dash-underscore</a>
  or <a href="http://example.com/dash_underscore" rel="nofollow noreferrer">http://example.com/dash_underscore</a>?</p>