My friends at AddThis sent me the list of the most shared content of 2009 according to the 600 million monthly people who view their share widget. I thought it was an interesting list and worth sharing.
Keep in mind this is online users who choose to share content by clicking on a widget embedded on the site or post as opposed to copy-pasting the link or using other share bookmarklets or plugins. I don’t think it really skews the data too much, though, because I believe those outside the social media bubble probably use the share widgets like AddThis more than those of us with other mechanisms to do so. This is what was popular for the world. What was popular to the social media bubble doesn’t matter much.