PostRefLookup allows your readers to quickly access reference material (e.g. a dictionary) at PostRef.com and then return with a single click to your post.
You can also setup links on specific words in your posts using [lookup][/lookup] tags. For example, the following code will generate a hyperlink that will take your reader directly to a dictionary lookup of the word "erudite" within the Encarta Dictionary.
The plugin is available for download at the following address: