It's trivia, not to be confused with actual knowledge. They're essentially four decades old in-side jokes - the equivalent of asking "I can haz {what}" in 2050 and calling it "Internet trivia".
The name of Mark Pincus's dog could be considered Zynga trivia, but this sounds like personal trivia about a Unix developer. I do hope Pike expounds on some of the stories behind these.
*THE Unix developer.
Until Mark Pincus wins a Turing Award for Farmville, it's probably not fair to compare the two.