DrDoc - 4:32 pm on May 6, 2013 (gmt 0)
The point about meta tags (in general) is to provide non-display information (title, links to CSS/JS assets, etc). Some are used/referenced by the browser, some by search engines, yet others by your editor or on-server scripts/programs. The only really useless ones are those put in place by the editor. The point is to know what a particular meta tag does, how it is used, and by what. If you can't answer those questions, don't use the meta tag.
And, Welcome to Webmaster World to several of our newer members :)