Yammer.com is rebranded to Viva Engage - Starting today!

AllisonMichels as I mentioned in my earlier comment, the specific post that I encountered that was missing was called Use Yammer to make newsletters interesting again!  As NicolasKheirallah mentioned in his post, the original link is here, but it's broken: it just gives an "Access Denied" error.

This is just the post that I happened to encounter that is missing, and it is not yet restored:  it's not at the original link, but I also searched for it in case the link had changed, but nothing.  I'm sure there are other useful ones that are missing, so it's good to know that you're restoring them.

In the future, I'd suggest that your group not summarily wipe out the entire collection of useful posts and then slowly add content back:  instead leave them in place and either modify (if they are still useful with updates/new truth) or delete (totally obsolete) posts as needed over time.  That would keep the original information and functionality in place as you make the necessary changes.