Plugin request

[Firefox Wins]

(11-16-2010 12:32 PM)ZiNgA BuRgA Wrote:  Oh I see.
I personally don't quite like the idea of using MyBB groups, since a lot of users making groups can put a lot of strain on the groups cache (MyBB really isn't designed for handling forums with a lot of groups)....

As a really rough estimate, how many user groups would be too many 50, 100, 150, 250, 500, 1000, 5000+?