Receptional_Andy - 8:22 am on Oct 9, 2008 (gmt 0)

I can confirm this too - I can see it displayed for pretty much any forum software, including custom solutions like at WebmasterWorld:

[google.com...]

Google has certainly put some work into grabbing (and displaying) useful data from page contents recently, and this strikes me as similar to Google Displaying Dates before Snippets [webmasterworld.com].