So this is the joke of advice that made me bother commenting on this article at all, which…
Danny Sullivan
21

Hi Danny Sullivan,

Thank you so much for pointing this out to me. I have updated the meta tag section to talk about meta description instead. I also included links to Google’s own site so people understand.

Google on meta tags/description: https://support.google.com/webmasters/answer/79812?hl=en