New groups stuff
Forgive me if this has already been reblogged a hundred times already, but… I just realized that Tumblr Groups now have user roles. If you were already in the group, you’re an admin and can delete/edit anybody’s post. The cool part: if you invite somebody now, they’re in as a non-admin user and cannot edit other posts or see the customize panel - and you can still delete their crap (if need be).
Also, I think submissions to groups are coming soon. That is, stuff that goes into the group Dashboard but isn’t live on the site until admin approves it.