Should I use underscores or hyphens in URLs?

Channel:
United States Google Search Central
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Published on ● Video Link: https://www.youtube.com/watch?v=Q3SFVfDIS5k


Duration: 1:04
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On February 26, 2009, Google software engineer Matt Cutts collected questions on Google Moderator and answered many of them on video.

tripstar from Ontario, Canada asked:

Underscores vs hyphens in URLS, does it make a difference? my-page vs. my_page?



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Tags:
google
underscores
hyphens
seo