When I saw the title my first thought was a system like http://flattr.com/ http://flattr.com/ which would monitor your tweets and then distribute your monthly

When I saw the title my first thought was a system like http://flattr.com/ http://flattr.com/ which would monitor your tweets and then distribute your monthly $3 to the sites or persons. That way your donating that you have interest or a book that you have read. Instead of spamming your friends