Should I use hyphens or underscores?
For the file name "mission-and-vision.htm" or "mission_and_vision.htm", which one is good for SEO(separator "-" or "_")?
marked as duplicate by John Conde♦ Apr 7 '11 at 3:29
This question was marked as an exact duplicate of an existing question.
Hyphens are the recommended separator - Google doesn't treat the _ as a word separator, so to count it would have to be the literal string: "mission_and_vision" that was searched for.