[bretpiatt]

It isn't about imagination. It is the cycle of the valley. Mature companies have employees go to found their own companies or join other pre-IPO startups. Working for Google you'll have a great career and quality of life but going to Facebook has the potential to make you quite a bit more money through equity.

[joezydeco]

So is that the true motivation for all of these xooglers? Cash in on something before they're completely burned out?