The latest secret project to trickle out of the Google search labs is something called “Google Base,” which several people — including Tony Roscoe — discovered while snooping around on the Internet. Apart from being a great excuse to revive the old “all your base are belong to us” gag from a few years ago, it appears to be an open database of some kind that Google intends to launch — which many observers have speculated could become a kind of on-line classified section, much like the popular Craigslist, which eBay now owns part of. Others, including Forrester Researcher staffer Charlene Li, think it could be more than that. Some believe that it could be part of Google’s big move into real estate listings, and could coincide with the launch of another rumoured Google offering, a payment scheme dubbed Google Wallet. For its part, the search giant — in typical fashion — is staying pretty mum on the subject.