This popped the question into DIY Investor's head as to how good the Google Plan actually is and sent him scampering to the site that rates plans relative to their peers: BrightScope.
As you can see, BrightScope gives a top peer group rating to the Google Plan:
The component ratings provide greater insight into the Google Plan:
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The one component that stands out is the "investment menu quality" rating at "below average." Since Vanguard is their provider, this isn't likely a matter of investment choices--although possibly some fund choices may have underperformed in recent periods. It may reflect the choices made by employees. As of 12/31/2009, the top holding was the Vanguard Wellesley Income fund at 25% of total holdings. With hindsight, we know that wasn't a good choice. Are the employees really that conservative?
In the comment section on the BrightScope page, a commenter recognizes the generosity of Google's 50% match for both the traditional and the Roth plans.