Here is the response I received from tech support. "we don't have any info about meta tags, really, on the help site, is because we don't recommend adding meta keywords, as search engines don't use them. However, you can still add them to the Header code injection area for site wide tags or in individual pages under the Advanced tab of the page settings using the Page Header injection points. But please be advised that we don't offer customer care for custom CSS like that."Personally, I believe that while Google says it does not look at meta tags, many other search engines do. I can also tell you that my stats increased by 20% by adding/updating meta tags to my two other sites that I host elsewhere.