Weekly digests :-) We're about 35 people split in 5 teams. On a weekly basis each team gets a "weekly update" mail containing a google document that gets created off a template doc. The weekly update contains some questions that basically ask the team what they did that week. It's a shared google doc so the team can collaborate to fill it in. Those filled in docs get aggregated into a single PDF and gets sent to everyone on a Monday morning. So everyone stays in the loop with the other teams' progress.