Google have just launched a new tool, as part of webmaster central, that shows more links than the standard link: command:
operator you might have used in the past. Now you can use webmaster tools to view a much larger sample of links to pages on your site that we found on the web. Unlike the link: operator, this data is much more comprehensive and can be classified, filtered, and downloaded. All you need to do is verify site ownership to see this information.
That is great, for all those interested, and we can stop having those "link: command doesn't work" topics.