The recent comments about Google's retention policy that have come up due the anti-trust case reminded me of what I found to be the creepiest thing at Google, how Google got line engineers to really buy into shutting down discussion of illegal and unethical activities.
And, BTW, I think it's totally reasonable for companies to have retention policies for a variety of reasons, including how easy it is to have comments that are taken out of context go viral due to sensationalistic journalism.