On one network that I\'m on, those with a certain level of IRCops (or higher) must be in certain channels, yet those IRCops that don\'t have those levels can be in those channels, but aren\'t required to be. The IRCop configuration file that is on the network does a forced join to those channels when you use the /oper command. Basically this was written so that people could set certain channels that they don\'t want to be in.
Might be used by kids to \'block\' any adult channels that might be present on networks that permit both.