It's so sad to watch a web site that you've been using for more than 10 years screw up and slowly destroy all the goodwill they've built up.
Come on Last.Fm, please don't fail us now.
http://www.last.fm/home
They've mistakenly gone live with a complete redesign when the beta clearly wasn't ready yet. And yet again, 10 years of communities and discussions have gone AWOL probably never to re-emerge. It also seems that most of the APIs are currently broken so there's a lot of developer goodwill lost as well.
Thanks, CBS.
https://getsatisfaction.com/lastfm/topics/missing-social-features
groups and their forums are definitely coming back, but they haven't been built yet. Again, I'm not sure how long this will take, so please bear with us while we restore this feature for you.
As an aside, it's worth stressing that the team haven't really worked on groups in over five years (as long as I've been here), so this would be a great time for you to tell us what kind of features and improvements you'd like see. Fixing the group leaders problem springs to mind, for example.