As fast as they were in it. They’re gone. As mentioned by Zac at Blogging Stocks, you do have to wonder how much money Google burnt through trying out print advertising.
Personally, I would have like to see Google pursue the print ad arena. Afterall, newspapers are only going to need more ads and will be willing to sell them at cheaper prices. Why depart the scene already? Why not stick with it, promote it a little more, and see where it takes you?