I found this fascinating quote today:

Zemanta is an excellent service, which helps in many ways to share the content, get related contents, images and link to related posts on the world wide web. You can install the WordPress Plugin for Zamanta. You can add links, images to your blog post using this tool. If you are using Windows Live Writer, there is a plugin which will help you in using Zemanta Platform. If you see the image on right side of this post. I just got it automatically from the Zamanta plugin.Asokans, Do you use Zemanta, Oct 2008

You should read the whole article.