Mine

alias aol {
  var %o = 1
  var %aol = 0
  var %naol = 0
  while (%o <= $nick($chan,0)) {
    if (*.aol* iswm $address($nick($chan,%o),2)) {
      inc %aol
      inc %o
    }
    else {
      inc %naol
      inc %o
    }
  }
  echo -a There are %aol AOL users and %naol Non AOL users in $+($chan,.)
}