erc-lurker-hide-list

erc-lurker-hide-list is a variable defined in `erc.el'.
Its value is

nil

Documentation:
List of IRC type messages to hide when sent by lurkers.

A typical value would be '("JOIN" "PART" "QUIT").
See also `erc-lurker-p' and `erc-hide-list'.

You can customize this variable.