I recently configured Google Reader to send link information to my own custom website, so I can easily share links using my own system. Using the web interface, there is a “Send To” drop-down that lets you share Reader posts to popular sites like Facebook and Twitter, or your own custom site:

Under Settings > “Send To,” you’ll see a section for configuring your own site integration:

Click “Create a custom link,” and fill in the details:

The only real important field is URL. It should look something like this (pointing to your own domain):
index.php?page=stream&link_source=${source}&link_title=${title}&link_url=${url}&link_urlshort=${short-url}
Notice the URL parameters above:
link_sourcelink_titlelink_urllink_urlshort
Each of these are mapped to a Google Reader variable that is included when you click “Send To” (and choose your custom site):
${source}${title}${url}${short-url}
For example, the actual URL would look something like this:
index.php?page=stream&link_source=Jeffrey Zeldman Presents%3A The Daily Report&link_title=AEA Minneapolis&link_url=http%3A%2F%2Fwww.zeldman.com%2F2010%2F05%2F06%2Faea-minneapolis%2F&link_urlshort=http%3A%2F%2Fbit.ly%2Fa7dYGX
So on your own site, you simply capture those URL parameters and process them in your own application.

Above we have a simple form that is used to submit new links, to be displayed however you’d like within your custom application.
It’s a shortcut that can save you some copy/paste efforts, especially if you use Google Reader a lot.
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