I was in a meeting a while back where an architect was relaying an experience he'd had with a problem with phishing, where he had two databases and needed to synchronize data between the two, and whether or not we should use a surrogate key. Everyone in the room nodded along until he got to the end of the story, and we all realized he was talking about fishing databases.
In college, a friend of mine went to ticketmaster to buy some tickets for a Pearl Jam concert. He spent a few frustrated minutes searching the site, unable to find the information although he knew they were coming to town. Then he realized his mistake: He'd been searching for 'perl jam'.