The new tool for backlinks analysis is available at http://ahrefs.com since march 2011. It provides lots of useful backlinks statistics for your and your competitors' (or everyone else's) sites.
Distinguishing feature of this tool is an independent database refreshed in realtime (circa 6 billion external and 25 billion internal links added each day). Ahrefs.com uses custom crawler to fill this database and is not affiliated with other search engines or similar services.
You're welcome to try new possibilities on any URLs you are interested in!
Ahrefs.com provides several free and paid service offers depending on the depth of information being analyzed.

Here is a new great feature by Ahrefs.com! Ahrefs Top ordering the most significant internet-projects by their referring IP's quantity! Who is the first million on the Internet by objective criteria of referring popularity? Monitor them at http://ahrefs.com/ahrefs_top.php

Quote:objective criteria of referring popularity

How exactly is this calculated, Google is no 4 on the list, Pay Pal is 15

This actually looks nice, i might try it later tho