This is a good point. I've also worked at huge behemoths before, and I wish there had been internal mailing lists to rant on. The bureaucratic walls around innovation and product release were so tall that a healthy release of those frustrations would have been nice. It's good to see that Google's employees have something to complain about, but more importantly that they actually complain about it.
There is a danger with internal lists and rants, they are subject to discovery on lawsuits afaik (IANAL), so things have a tendency to not stay internal over time. Google may not have been bitten by this yet, but I imagine it is only a matter of time.
