of slang acronyms that were once specific
only to the AOHELL
service itself. Many AOHELLese terms
originated with the purpose of saving
keystrokes in AOHELL
chat rooms and Instant Messages, (for example, "IM" for "Instant Message", "YGM" for "You've Got Mail", "YGP" for "You've Got Pictures", etc.).
Man YGM and it's probably SPAM.