Meta Keywords? "Google doesn't use the 'keywords' meta tag in our web search ranking."

Writes Matt Cutts in his blog. Keywords are still important in the description meta tag as those will show up in the search results, though apparently not used for rankings. A video on Matt’s blog explains further as does an entry in the Google Webmaster Central Blog. The is more clarification in the Q&Q and comments that follow there.

One says leave the keyword meta tag out to save space and increase speed; another says leave it in for insurance and possibility other engines use it. Other thoughts?