Keywords were once the darling of the metadata world. While those days are gone, there’s still value in spending time developing content for a keyword metadata tag.
Why? If a search engine spider finds keywords in your metadata that match the keywords on your site, you’re likely to achieve a higher ranking in the search index. Most search engines will index up to 20 words, so it’s important to put your most important keywords first.
The following meta tags may (or may not) have value for your site:
Robots – A common misconception is that you need a robots meta tag. Search engines assume you want to index your site and have its links followed. It’s only if you want to change either command (index, follow) that a robots meta tag will be helpful for your site.
Language – Us this tag only if you’re site is migrating internationally and you want to declare the main language used on the page.
Geo – The geo meta tag options are supported by some, but not all, search engines. Examples include position, place name and region:
<META NAME="geo.position" CONTENT="latitude; longitude">
<META NAME="geo.placename" CONTENT="Place name">
<META NAME="geo.region" CONTENT="Country subdivision code">
Refresh – This meta tag sends the user to a new URL after a certain amount of time and is sometimes used as a simple form of redirection. It is not supported by all browsers and can be confusing to the user, so its use is not recommended.
This is by no means a complete list of available meta tags. Search for “meta tags” or “metadata tags” for other tags that may prove helpful to your site.