Forum Moderators: Robert Charlton & goodroi
Google link: operator FAQ - it's not like other search engines [webmasterworld.com]
For that reason, most people I know use Yahoo! SiteExplorer so they can get more complete link data.
Right now at least, Google's link: operator does seem a lot more limited, even than its usual condition. I just checked several domains that I work with regularly. Some of them came up with zero, when I know there are thousands of backlinks.
It's not a complete washout. Strong sites - microsoft.com is a good example - still show some backlinks.
By the way, that link: operator FAQ is always easly found as part of the Hot Hot Topics area [webmasterworld.com], which is always pinned to the top of this forum's index page.