Some topics are so shrouded in mystery, they can divide the very SEO experts themselves. Nowhere is this more true than the ubiquitous meta tag. Sure, you’ve written a fantastic meta description, volunteered some of your more important meta keywords (even if you are unsure how much impact the latter will have).
But what next? What other meta tags should you include? Here are just some of the meta tags I see in wide use on the web:
<meta http-equiv=”content-type” content=”text/html; charset=iso-8859-1“>
<meta name=”keywords” content=”meta tags, rogue meta tags, useless meta tags, dangerous meta tags” />
<meta name=”description” content=”The Manchester SEO Blog guide to meta tags, rogue meta tags and downright dangerous ones.” />
<meta http-equiv=”refresh” content=”3;URL=http://manchester-seo-blog.co.uk/”>
<meta name=”robots” content=”would you pass the Turing test?” />
<meta name=”title” content=”Redundant Meta Title” />
<meta name=”rating” content=”unsuitable for homosapiens” />
<meta name=”distribution” content=”global” />
<meta name=”publisher” content=”Rogue Meta Tag Technology Ltd.” />
<meta name=”author” content=”John Doe“>
<meta name=”designer” content=”Jane Doe“>
<meta name=”copyright” content=”Rogue Meta Tag Technology Ltd. All Rights Reserved“>
<meta name=”abstract” content=”A brief overview of some of the more useful, the useless and the downright dangerous meta tags people use on their web pages.“>
In this post, I hope to provide you with a brief overview to the jungle of meta tags.
Useful Meta Tags and Robots
<meta name=”robots” content=”nofollow” />
<meta name=”googlebot” content=”noimageindex” />
Some meta tags can be used to give the robots supplemental information about your page and modify their default behaviour. Meta keywords and description have already been discussed. Robots, is highly useful one which you can direct at all crawlers by specifying “robots” or to a specific crawler such as “googlebot”. You can use directives such as: noindex (do not index), nofollow (do not follow links on this page), noarchive (do not store cached copy of page), noodp (do not use DMOZ description), noydir (do not use the description from Yahoo directory). Not all robots are polite, and at the time of writing, only Googlebot, Yahoo and Bing/MSN/Live crawlers respect these directives. Googlebot also supports: noimageindex (do not index images on page), notranslate (do not offer to translate the page) and unavailable_after (will not recommend for search after a particular date)
Other Useful Meta Tags
There are a small number of other useful meta tags, such as:
<meta http-equiv=”refresh” content=”3;URL=http://manchester-seo-blog.co.uk/”>
<meta http-equiv=”content-language” content=”en-US,fr”>
The first will cause your brower to refresh the page after X seconds (where X is the first number in the content section). You can also specify a URL and use this to redirect your page. But this is the worst kind of redirect, as any SEO expert will say, you are better using a 301 redirect. The second meta tag allows you to specify the language content of the page itself. (see later for multiple language meta tags)
The Redundant Meta Tags
All major Search Engines will ignore meta tags such as: rating, distribution, rating, author, designer and publisher. You may have your own reasons for including these, but do not expect them to make a difference in your websites rank! Some (such as the ‘rating’ meta tag) were genuinely proposed as a method for allowing webmasters to set the ‘age appropriateness’ of web pages. The difficulty is that without the backing of W3C, it is not standard. Without a set standard, we cannot expect search engines to habitually use meta tags like these. There is also an issue of honesty when reporting on the self :- if you are a webmaster who runs a site, would you wilfully restrict access to your website?
Meta Tags in Multiple Languages
The W3C consortium have proposed a method in which you may specify several different sets of meta tags in different languages within the same page, by using the lang=”" form. For example:
<meta name=”keywords” lang=”en-us” content=”vacation, Greece, sunshine”>
<meta name=”keywords” lang=”en” content=”holiday, Greece, sunshine”>
<meta name=”keywords” lang=”fr” content=”vacances, Grèce, soleil”>
<meta name=”keywords” lang=”ja” content=”空室, ギリシャ, 日照”>
Summary
If in doubt – leave it out! Google and most other search engines will make very good guesses about your page based on the content itself. If you are not sure how to use the meta tag, it is best not to! You may find interesting ways of shooting yourself in the foot by asking search engines to not index or cache your page. It is always better to err on the side of caution, and (as ever) look to W3C as a guide.
Tags: content, manchester seo blog, meta description, meta keywords, meta tags, redirect, refresh, robots, SEO
Very interesting read Roger. I cannot believe how many sites I see with a full 20 lines of Meta tags in the head section of the HTML!