Your username is used to construct your "host mask", which is a string representing you. It includes your connection's host name and this username. It is sometimes used for setting auto-op, bans, and other things specific to one person.
Your username is used to construct your "host mask", which is a string representing you. It includes your connection's host name and this username. It is sometimes used for setting auto-op, bans, and other things specific to one person.