Force users to secondary usergroup?

[Marco van Herwaarden]

1. I haven't got a clue.
2. Yes there will be. Which? I was i could already tell you.
3. No, yes.

The way of using public joinable Membergroups seems the best way to handle this in my opinion. You could make members join the groups a bit easier by showing on the main index something like: You are member of group A, You are NOT a member of B,.....

If you make this in a way people would notice, they might be checking the Membergroups.