Google Shared Contents publishs the contents you shared with your google reader account. Plugin allows you to publish your shared contents which you
You just need a Google ID (account). If you don't know what your Google ID is:
Login to your Google Reader acount and click “shared items” on left sidebar. Than you will see a link that has a path to contents you shared before as below:
The equivalent data in path you get to bolded data above is your Google ID.
Login to your Google Reader acount and click “Notes” on left sidebar. Than you can drag and drop the sampled buton to any area you want on your browser. Or you can manually create a button has a location as below (pleace remove the line spaces):