Forum Moderators: Robert Charlton & goodroi
At this point, I'd say Google is trying to display sitelinks as a navigational aid to the user, and Google is doing it almost any time that a search is entered for a full domain name. If psople are familiar enough with a domain name to perform a "navigational search", that already means you're site has a degree of special-ness - and that's what my take is on seeing sitelinks show up.