This comes from a question I received about using false tells. Here is one example of a false online tell I will use.
yes - i do use false tells.
generally they only work against really good opponents who would actually notice online tells (online tells are harder to notice as there is less information to convey to your opponent. ie: they cant actually see you, just your betting pace and amount).
it really depends on the game. i try to just think about what i have done earlier in the game, or against that player at another time.
for example: lets say on the turn in a heads up game against a really aggressive opponent i have top pair, weak kicker (or some fairly marginal hand) he may make a large bet on the turn and i may just decide that i think my hand is the best and i am going to call him here (i WONT raise here because he will only call if he has me beat).
now, lets say it takes me awhile on the turn to decide what i want to do. i may use up almost all of my alloted time to decide. assume the player is bluffing, and he fears i have a monster hand so he checks on the river. he sees that i have top pair with a weak kicker, and thinks to himself - "i probably could have bluffed him off that hand." (which he probably could have)
later on in the match, or sometime against that player, i may use this false tell. if i have a MONSTER that i want to slowplay, i will play it the same way. I will not only slowplay it, i will use a lot of time to 'think' about if i want to call on the turn (or flop or whenever). this player will be very likely to think i have that same marginal hand again, and continue to bluff.
this is just an example of using natural tendencies the other way around to trick players. i would be interested to see if anyone else has some examples that they use.