Is it important to use Meta Keyword Tag? (video)

All of the search engines have officially stated that they don’t use the Meta Keyword Tags to determine relevancy or search rankings for keywords.  So don’t spend a lot of time working on your Meta Keywords Tags. It’s still a good idea to use them if time allows – you can include things such as misspellings or other forms of the target keywords for your page.  Don’t use them for copyrighted terms of other companies (e.g. your competitors) though.  Companies have been sued over this.

Here’s the video from Google’s Matt Cutts regarding the Meta Keywords Tag and a link to the post on his site.