Professional SEO Tip #11 – Lose Those URL Underscores!
I recently conducted an SEO audit on an ecommerce website that was using underscores (the _ symbol) in its URL’s as a word separator. If you are doing this, you should replace those underscores with hyphens (the – symbol) as Google is able to separate hyphenated words far more easily, and apportion SEO score accordingly. [...]



