Content suggester for your blogs

Previously reviewed by TechCrunch and ReadWriteWeb, Zemanta offers itself as a useful tool to help bloggers.
It is currently available as a firefox plugin. It helps bloggers find relevant content to their articles by suggesting related content through pictures, links, articles and tags on the side.
On their FAQ page, they mentioned that images are suggested from Wikimedia Commons, Flickr and various stock photo providers, whereas for articles, they index around 300 top media sources and numerous blogs of similar Zemanta users. All the suggested content is copyright cleared - either clearly licenced as Creative Commons, or approved by stock providers. Recommendations are retrieved by statistically comparing the context framework of blogger's post to their preindexed database of other content.
It is interesting to see in future if such a tool will be more often used by sploggers(/spam bloggers).