Like a lot of wargames forums, the BBB Yahoo group has migrated to groups.io:
https://groups.io/g/bloodybigbattles/topicsHappily this means the 100s of scenarios, player aids and other resources in the group files have been preserved, not to mention five years of erudite (or not) discussion.
The files are also easier to find than they were in Yahoo; and I believe the group is easier to join. If BBB might be of interest to you, please do check out the group and join up if you haven't already.
Chris
Bloody Big BATTLES!