From CUENDE Infometrics:
Visit Source is a useful marketing tool . It analyzes one by one all your external referrers, (links that point to your site) that has generated at least one visit. So, you can know who is generating traffic to your site, and which sites are really promoting your site.
You don't have to worry or visit all these sites, VISIT Source does it for you.
What it does?
Visit Source scans all the external sites that had generated at least one visit in your site and it presents reports with these information:
Web Site ranking by visits generated to your site.
Logos or Web page screen shots of each site.
The context of your link. What was reading your visitor to click on your link.
Company activity of the referring site.
Resume or keywords of the web site content.
List of the site's web pages that contains links to your site.