Causing confusion in your opponents is a good way to give you an edge, especially against intermediate players. For example, take the convention touted by many poker tomes that you should always raise by the same amount to prevent opponents from differentiating your holding. Psychologically speaking, it can be more effective to vary your bets to keep your opponents in a state of confusion. If you vary it enough they will stop trying to see a pattern in your play, which will reduce the chance of them 'working you out'.

However, you need to keep your raises truly random if you want to try this out. Humans are incredibly bad at generating random sequences, so even when you think you're being random there is normally some kind of fixed pattern you're subconsciously following (which may be why poker books tell us to keep the bets the same size!). To avoid this trap, generate a random sequence of raises in advance of playing, or rely on something else to generate the size of the raise for you (e.g. look at where the second hand is on your watch: 0-15 seconds equals a raise of two-and-a-half times the big blind, 16-30 seconds equals a raise of three-and-a-quarter times the big blind, etc).

Another way to unbalance your opponents is to send out conflicting messages. You can be as subtle or as blatant about this as you see fit. For example, when first sitting down at a sit & go table online (assuming you've never played with the players before), you could type in to the chat box something along the lines of: 'I hope you're all going to be kind to me tonight – this is my first game online.' Whether they initially believe it or not, you've sown the seed that you're a new player (and first impressions are difficult to dislodge), so when you make a 'squeeze' play later on, your opponent, who has to decide whether or not to call you, will be uncertain whether this so-called new player is capable of making such a move. As the time bar ebbs away, they will most likely take the safe option and fold – provided they're a good player, and not a maniac or a calling station.

Anything you can do to stop your opponents working you out is a good thing, and messing with their heads through the use of confusion and false information is an excellent method.