This is one of the best tools to track conversation about a specific URL. This URL can be a blog post, a news story, a product page, whatever you want to find what people on the web say about it.
Talkdigger will look in thoses sites (Technorati, Google Blog, Bloglines, Feedster, BlogDigger, Icerocket, MSN Search, Google, Yahoo!) to see who is linking to it. It will show you all it can find on thoses sites with a PageRank meter associate to each entry. You can also generate a RSS feed to keep track of your URL in your aggregator. A really cool new tool. The only little problem, for now, is the UTF8 characters parsing in some site.