Translations:FAQ/119/en

hidden on the client-side
Clients will often 'filter' channels for you.
 * For example you can set it to only show channels with more than 2 people, so you won't get to see the ones with just 1 person in it.
 * mIRC has an option called 'Hide non-alphanumeric channels' under 'list options' which is enabled by default. It means that channels like #.blah are thus hidden by default. Other clients might have similar "features".