• Admins keep server logs that show what subreddits people are coming from when they brigade
• When many subreddit members brigade, the admins will ban that subreddit, EVEN if the subreddit's mods are doing everything they possibly can to get their members to stop — even when it's the members' fault and not the moderators'.
• Subreddits that have been banned for brigading:
  • Reddit has five rules. "No brigading" is rule #2.
  • /r/PCMasterRace, banned on 20 Nov 2013 [1] [2] [3]
  • /r/n****rs, banned on 30 Jun 2013 [1] [2] [3] backstory: [4] [5] [6]

What exactly qualifies as brigading?

• /r/SubredditDrama has 80 people comment in another thread, and institutes a "do not comment in linked threads" rule
• following totes_meta_bot's link backwards can be considered brigading too