Robert_Charlton - 10:01 pm on Mar 5, 2009 (gmt 0)

As I understand from what I read or heard... and I'm not sure where that was... Google had announced that they were going to be testing these inline Sitelinks.

It's therefore likely that they may appear and disappear in the course of the testing period, as Google evaluates user satisfaction.

If you mouse over any Sitelink, you'll see a fairly elaborate set of tracking parameters, and obviously Google is paying attention to how searchers use these.