Hi Bob,
I haven't actually bothered to park them (they're still parked in their previous owner's accounts).
The only 3 I'd imagine having any reasonable amount of traffic would be:
FAAA, LLLT, and IIIT
FAAA is the name of a commune in Tahiti (home to almost 30,000 people), as well as the name of an Tahiti's International Airport so it should receive some traffic. For more info, see: FAAA on Wikipedia
LLLT is an acronym for Low Level Laser Therapy. The acronym LLLT has paid sponsors for this term and shows considerable (for an LLLL.com) Wordtracker results. For more info, see: Photobiomodulation on Wikipedia
IIIT is the name of several International Institutes of Information Technology in India. For more info, see: IIIT on Wikipedia.