No. of sites linking to a page

[norbiu]

Is there a way to find out the number of pages that link to a certain page using PHP? (via Google)

[rocknbil]

Google discourages automated queries, and may take appropriate action, but you can use curl or some other program to get the results of q=link:example.com (or example.com/page)

[norbiu]

Tried "link:", but it doesn't seem to show everything, like on Google Webmaster Tools.

I'm trying to come up with a url voting system that doesn't require humans.