Stanford and Berkeley EA are organizing a review and popularization of Givewell’s research by EA chapters. Givewell generally encourages feedback on their research, and has said that it is one of the few types of volunteer labor that could be useful for them; Givewell also doesn't currently do popularizations of their material. Both of these tasks are very valuable: Givewell does make occasionalerrors, and more outreach for Givewell will likely translate pretty directly into more donations for Givewell.
^ This seems like potentially too often to get momentum from everyone. I think one day, 3 hours weekly or bi-weekly is pretty realistic though. We'd have to streamline the setup part, that took disproportionately long.
I think I'd rather have better attended events less frequently than worse attended events more frequently, but I could easily see myself changing my mind on that. This is something I'd probably only want to do once every two weeks or once every month.
I will say I personally found this very helpful. I would be happy to continue organizing them on a weekly basis if that's a possibility, or every 2 weeks also works. But I think there's considerable value in structuring our time and focusing on deliverables over a period of 3~ concentrated hours.