Recently Google, Yahoo and Microsoft announced they had come together and agreed on a new HTML tag.
The tag is part of the headers and is called the canonical tag. Basically it allows you to specify the definitive name for any page.
This is useful when you can have more than one way of getting to content (and therefore different url’s). Without the tag there is the chance of the content being marked as duplicate by search engines. This is bad as they will mark you down for this.
With this new tag all of the engines can recognise that really you mean them to treat it as a single page and index accordingly.
Anyway, to the point of the post. Our Research and Development group (otherwise known as Ben, our Chief Architect) has thrown together a simple extension for Firefox that shows the the canonical name without needing to trawl through the source of your site. You can download the canonical firefox extension for free from the Wahanda site.