I tested click through rates for blog posts on the front page of Google with and without dates in the URL: - 2+ year old articles (2012), removing the date in

I tested click through rates for blog posts on the front page of Google with and without dates in the URL: - 2+ year old articles (2012), removing the date in the URL tripled traffic. - for recent, same year (2014), date removal was a marginal difference either direction. My advice would be, if your article has a long shelf-life (like an article comparing PHP's sync nature vs. Node's async nature, since this is doubtful to change), an old date can inappropriately put a shelf-life on your appeal. If you're writing on the 1.0 release of Angular and how you got around an annoying issue, that date will save me from copy/pasting your solution :)