[vchynarov]

I work there currently and I agree - I can imagine frustration for a while after leaving and not having a good place to make a bunch of posts.

Posts and work groups are actually a generally good way for scalable work communication - and leaving a public and searchable record. This doesn't replace Google docs and wikis, but serve as another layer to organize them. (I promise this doesn't lead to needless bureaucracy, that still happens but not because of Workplace).