ebay-jitsu - This form allows practicioners to find mislabled or miscategorized items of interest and to bid on them in such a way as to win the item for a pittance.
google-fu - Practicioners of this art can find literally anything on the internet. Anything. Plans for Air Force One, locations of Soviet missile silos, Patrick Hurley's favorite drink - ANYthing.
wikido - These artists know how to nail down the facts as known to the general public and recorded in the wikipedia.
Wikido and Google-fu adherents can often be found trying to prove which art is the more comprehensive.
(some of us have waaaaaay too much imagination...)