Noted role-playing games designer Monte Cook has a hilarious post for us all (Hat Tip to Alan E. Brain for the email)

"If you're a veteran of any Internet message boards, bulletin boards, mailing lists, or Usenet, you've almost certainly run across a common wandering monster that frequents the Net: the troll. (You've almost certainly heard non-trolls being referred to as trolls as well -- such is the nature of the Internet.)

Trolls are people who go to a message board (or similar discussion area) and start a new thread of messages with a post designed only to be inflammatory.... This has had me thinking for a while now: If there are trolls out there, what other monsters lurk in the caverns of the Internet, waiting to strike? As a public service, I've created a wandering monster encounter table for [Internet discussions]...

Evil merchants, mimics, hydras, necromancers, archangels, undead slayers, crusading ogres, and so much more... even .Sigmund the Sea Monster. Oh, my!