Recently i founded out a very good which is used to check the link popularity of any site

Words from there site

A tool to check at-a-glance the link popularity of any site based on its ranking (Google PageRank, Alexa Rank, Technorati etc.), social bookmarks (del.icio.us, etc), subscribers (Bloglines, etc) and more!

You can also embed that tool to your site

See the services offered by this tool

the tool is located here www.popuri.us

Thanks

krates