According to a quick google on "ARF" it could be:
Animal Rescue Foundation (
www.arf.com)
ASEAN Regional Forum (
www.dfat.gov.au/arf)
Animal Reinforcement Forum (
www.scs.unt.edu/orca/)
Advertising Research Foundation (
www.thearf.org)
and about 951.000 other hits including presumably the one or other gazillion of societies, organizations, structures, ... , using the acronym "ARF".
PMS! (please more specifications ;-)) )
bakunin