found:ASTI on FirstSearch, July 19, 2002(descriptor: Instant messaging (Internet))
found:Official Internet dict., c1998:p. 73 (Instant message)
found:Washington post express, Mar. 31, 2006p. 12 ("Companies cracking down on use of tools like IM, outside e-mail." "... workplace use of the expanding range of free Internet services, such as instant messaging ...")