Talk Digger is a (beta) service that let’s you search for your blogposts instantaneously in the likes of Bloglines, Technorati, BlogPulse, PubSub, Icerocket, Feedster, BlogDigger, MSN Search and Google. It returns the number of occurrences with details on click and a trend. You can use a bookmarklet, enter a URL or make a direct link.
Try it for yourself or see the result for this post (probably none ;-)).