A tell is any sign from a player that gives away information about his/her strategy or hand. In a real world poker game its much easier to pick up on other people tells, but unfortunately it's also easier to give away tells yourself. In online poker your physical body language has no effect; no-one can see your smile when you are dealt those pocket aces. However there are online tells to pick up on.
Do you think you could spot a tell on either player from this memorable Monte Carlo Million's hand with Phil Ivey and Paul Jackson?