A simple .net assembly to use to parse Open Graph information from either a URL or an HTML snippet.
OpenGraph graph = OpenGraph.ParseUrl("http://www.amazon.com/Spaced-Complete-Simon-Pegg/dp/B0019MFY3Q");
You can access each open graph value by passing in arguments to the results. For example: graph["Description"] will return the description.
The required Open Graph properties are available view properties on the OpenGraph object as a convenience.
The original url used to generate the OpenGraph data is available from the OriginalUrl property graph.OriginalUrl