AOL!

from Jargon File (4.4.4, 14 Aug 2003)

AOL!
 n.

   [Usenet] Common synonym for "Me, too!" alluding to the legendary
   propensity of America Online users to utter contentless "Me, too!"
   postings. The number of exclamation points following varies from zero
   to five or so. The pseudo-HTML

  <AOL>Me, too!</AOL>

   is also frequently seen. See also {September that never ended}.

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

AOL
       Alert On LAN (LAN, Intel, IBM, BIOS), "AoL"

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

AOL
       America OnLine (network, AOL)