Those of us writing corporate blogs received another cautionary tale today:

Mark Jen, a blogger whose candid comments about life on the job at Google sparked controversy last month, has left the company.

"Mark is no longer an employee at Google," a Google representative said in response to an inquiry Tuesday. Efforts to reach Jen for comment were not immediately successful.

Jen's departure comes less than a month after he joined Google as part of a wave of new hires and began recording his impressions of his new employer, including criticisms, in his blog.

Update: Scoble adds some useful thoughts on the subject. Jeremy Zawodny has some details and observations