Back in June, Justin Rosenstein — a Google product manager — generated some buzz when he left for Facebook with an email calling it "The Google Of Yesterday." Today, news that another Googler has gone over, this time Google Checkout product manager Benjamin Ling.

Netly News has more details, and the story also notes YouTube’s former CFO left to work at Facebook back in August. I hadn’t caught that departure.

For more background on Rosenstein’s leaving, see our past post Top Google Engineer & Product Manager Leave Google, as well as an exit interview with him that Inside Facebook ran. See also related discussion starting on Techmeme about Ling’s leaving.

Postscript: From Google to Facebook from Google Operating System covers how a fourth Googler, Pedram Keyani from Orkut, left for Facebook in July.

Related Topics: Facebook | Google: Employees

About The Author: Danny Sullivan is editor-in-chief of Search Engine Land. He’s a widely cited authority on search engines and search marketing issues who has covered the space since 1996. Danny also oversees Search Engine Land’s SMX: Search Marketing Expo conference series. He maintains a personal blog called Daggle (and maintains his disclosures page there). He can be found on Facebook, Google + and microblogs on Twitter as @dannysullivan. See more articles by Danny Sullivan