Google Webmaster Tools allow users to check up and analyse lots of different information that Google house on your authentication domain names and best of all its free. If you’re not using the Google Webmaster Tools, see here and sign up today.
With the new reports, they show you three new things as a general overview:
- The top domains that are linking to your site.
- Samples of anchor text used by external sites as they link to your site.
- Which pages have the most links.
You can read the full article on the Google Webmaster Central Blog