Google, Microsoft and Yahoo announced support for a new 'Canonical Link Element' in the header of your website page that will help clean-up duplicate url's that have been indexed by search engines. This issue is so specially serious in DotNetNuke that there are duplicated contents returned for different urls. And we ever supplied a handy solution for our blogging module – SunBlogNuke in the tutorial - SEO Best Practices for DNN Blog Posts.
Today we released the new SEO extension - the alternative way to build the canonical link for your dnn blog post to avoid duplicate Urls. To apply the blog extension, it is so easy and just follow up the simple steps below:
1) Download it from the extensions directory.
2) Unzip it and upload the extension file Canonical.cs' into the folder $ROOT/bin/Blog_Extensions. If not exist please create it at first.
3) Open up the web.config and make sure that the blog extension element there. If not exist, add the directory 'Blog_Extensions' in the element [codeSubDirectories] and it looks like as follow:
<codeSubDirectories>
<add directoryName="HTML" />
<add directoryName="Blog_Extensions" />
</codeSubDirectories>
That is all. It should work like a charm - when visiting the post detail, it will automatically add the canonical meta tags to your blog post.
BTW, you may be interested in the similar guidelines about other awesome blog extensions:
Integrated Social Graph into DNN Blog
Post Comment to Journal of Active Social
Hope it helps. Blog your way and enjoy life. :)