Google Blog Search (as the name implies) is a search engine focused entirely on blogs. By using this handy bookmarklet, you can view a list of blog posts that reference the selected page. This makes it easy to see what others are saying about your blog post.
Adding the bookmarklet is simple, just drag the bookmarklet below onto your toolbar.
To view the list of references to a given page (or URL), go to the desired page and then click the bookmarklet in your toolbar. A new window will appear containing the Blog Search list. You can adjust the list to specific points in time by using the links in the Published section on the Blog Search page (choices are Last hour, Last 12 hours, Last day, Past week, Past month, Anytime (the default), or you can choose a date range by selecting the Choose Dates link).