To find a sampling of links to any site, you can perform a Google search using the link: operator. For instance, [link:www.google.com] will list a selection of the web pages that have links pointing to the Google home page. …
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See a much larger sampling of links to a verified site:
On the Webmaster Tools Home page, click the site you want.
On the left-hand menu, click Traffic, and then click Links to Your Site.
See https://support.google.com/webmasters/bin/answer.py?hl=en&answer=55281