Use a simple <link> element in the <HEAD> of your page to identify which is the real page. This makes your link juice flow in the right direction.
In a page reachable by both of the following url’s:
we would put the following:
<link rel=”canonical” href=”http://www.dayspring-tech.com/work/universities-and-education/ucsf-path-lab-redesign”/>
By doing this, whenever links go to the non-canonical address, the inbound link value is still flowed to the correct canonical URL. AND, you help the search engines out by de-confusing them re: related content.
Supported by Google, Ask.com, Microsoft Live (and Bing?) and Yahoo!.
Carpe diem on any duplicate content worries: we now support a format that allows you to publicly specify your preferred version of a URL. If your site has identical or vastly similar content that’s accessible through multiple URLs, this format provides you with more control over the URL returned in search results. It also helps to make sure that properties such as link popularity are consolidated to your preferred version.