Simply enter the URL of a recent (between 1 day and 2 weeks old) blog post, click the button and wait a moment. You’ll see a report containing the timeline of Tweets to that URL, statistics about potential reach and average follower count of retweeters as well as a list of the 20 most influential users to tweet the link.
There’s also a bookmarklet you can drag to your bookmarks bar. Navigate to the page you want to analyze and click on the bookmark to see the WhoReTweetedMe.com report.
The tool is still very beta, so don’t be surprised if you see some errors, but I think it’s valuable enough to release now.
Let me know what you think.