In today's modern time, the phrase is used to describe new members that sign up just to leech and request things.
alfonso1337: *Signs up on a gaming forum* Spams "cl plz" everywhere.
n00b69: *Signs up on a gaming forum* Can someone resign my game save? Can someone host me a lobby? Can someone hack me prestige 20?
xXHomovolXx: That kid is a cl plz