Meta Description Tag Use
Meta description tags can be used by search engines to show searchers what a page is about. You can leave off the tag and let the search engine create their own description, or you can provide the tag yourself. Even if you provide the tag, the search engine might not use it. If you’re going to use it, make each pages meta description unique.
I’m not too worried about them, I tend to use them because you sometimes get a better snippet from the search engines when the searched words are at the top of your page in the heading and there isn’t very interesting text near by.