Hot on the heels of the Goldman-Sachs resignation letter that Paul slogged earlier comes another impressive resignation from a far more sympathetic source: James Whittaker, who left Microsoft to join Google in 2009, and now explains why he's left Google to rejoin Microsoft:

[A] warning in advance: there is no drama here, no tell-all, no former colleagues bashed and nothing more than you couldn’t already surmise from what’s happening in the press these days surrounding Google and its attitudes toward user privacy and software developers. This is simply a more personal telling...

The "punchline," as Whittaker calls it, comes in the third paragraph:

The Google I was passionate about was a technology company that empowered its employees to innovate. The Google I left was an advertising company with a single corporate-mandated focus.

Read the whole thing here. (Thank you, Metafilter.)