Mine

code:

alias blacklist {
  writeini blacklist.ini $1 $2-
  if ($1 ison #) {
    /mode # +b $address($2-,2) {
      kick $1 10 $2- 10 Blacklisted: $2-
      amsg 10 I am now blacklisting 2:4 $1 10reason2:4 $2-
    }
  }
}

alias unblacklist {
  writeini blacklist.ini black $1 $2-
  amsg 10 I am now unblacklisting 2:4 $1 10reason2:4 $2-
}

on *:join*:#: {
  if ($me isop $chan || $me ishop $chan) {
    $readini(blacklist.ini,$, nick)