Link Radar reports new inbound links from other websites to your own site(s) based on your Google Analytics data. As soon as a website refers a visitor to you (and has never done so in the past) it will show up in Link Radar with the exact URL.
What is new in this release:
You can now delete links from the list and you can add links yourself from any browser via a bookmarklet. That's useful if you discover a new link to your website before it gets reported in Google Analytics and you want to make sure to keep it.