Continuity mistake: When Eduardo finds the letter on the mantlepiece about them apparently stealing the idea for Facebook and asks Mark if they did or not, he places a bottle on the mantlepiece just before he finds the letter. This bottle rotates slightly between shots without him touching it after placing it down. (00:49:15)
Continuity mistake: Sean Parker is talking to the college girl in her bedroom. As the scene switches back and forth between them, the girls' sweatshirt changes position several times, on the shoulder, then off, and back on again.
Continuity mistake: After Eduardo threatens Mark with legal action, part of Mark's computer keyboard previously smashed by Eduardo appears on the desk, when in the previous shot there was nothing there. (01:46:40 - 01:47:01)
Trivia: The Ad Executive Mark and Eduardo are asking for advertising funding is portrayed by Aaron Sorkin, who wrote the screenplay of this movie. (01:05:00)
Answer: No, earlier when it came up in the lawyers office, Eduardo thought it came from Mark, but the lawyer stepped in and said they were able to find it themselves. Sean really had no idea what he was talking about, but didn't use it against him.
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