I really do not think they'll hurt but I agree with just about every post, they are not needed for any search engine. They are ignored with exception of the Title, KW, and Desc
Just because you put a tag in there stating follow and index, or update every day, doesn't mean squat to the search engines...
Stick with the top three and you'll be fine. You may pose the question to the "
seo expert"; "Give me three reasons you need these extra tags"