1. Spamming "voteban" messages is form of spamming, any form of spamming is a violation according to MOTD.
2. Votebaning any innocent player, in other words player who has not violated any MOTD rules, falls under the "Exploiting the server or game."
3. I warned everyone on the server by saying "ADMIN_ALL: next person to voteban without any reason will be banned for 30 minutes", they all ignored it, means: "Impersonating, ignoring or disrespecting an Admin."

3 violations of MOTD = 30 minutes ban.