[redlabour]

Simple answer :

Enable Canonical URLs NEW!
A canonical URL is the "Preferred" URL for any page. Some pages have more than one accessible URL, creating a duplicate content problem. Google and other search engines now look for a META parameter rel="canonical", and use this as a hint to determine which URL is the correct one to index, i.e. the preferred version.

vBSEO's built in Link Consensus ensures that all pages on your forum are canonical to begin with, allowing for only one URL per resource. vBSEO's native canonical URLs provide advantages including greater crawling efficiency, optimized external linking, maximized link value. This is not provided with the rel="canonical" parameter alone. vBSEO's Application level link consensus is required for these advantages.

However, Google's canonical hints are helpful as a backup for URLs such as custom sorted pages. This level of redundancy will ensure that if search engines ever discover the sorting URLs, they will be instructed of the correct page URL for link consensus the first time they crawl the page. Examples include custom sorted versions of forumdisplay, social group discussions, member and blog lists, etc.