Nothing focuses the mind on sensible email retention policies like working at a company where all the email got subpoenaed.
So, for example, we try to choose names for applications that aren't going to give people the wrong idea, eg don't call your market manipulation tool TurboMarketManipulator, call it EnhancedOrderManager.
Good advice. I am somewhat surprised at times on what the media doesn't uncover and try to spin as a conspiracy theory. For example, we had this open source project publically available https://gfiber.googlesource.com/kernel/prism/ around at the same time as the Snowden leaks about "prism" and nobody wrote any articles about it. Of course, it's completely unrelated... but I feel that that normally doesn't stop people.
I found the whole thing very interesting.