Factors in Determining Implied Odds

Obviously, the larger the size of potential bets, the greater your implied odds and the more reason you have to call with a hand that might improve to the nuts. However, the other two factors are important too.
In adding the possibility of future bets to the present pot to get your implied odds, you should take into account whether the strength of your hand is hidden. When the cards that help are obvious, you cannot expect to get as much value out of your hand if you make it, since opponents simply might not call when you bet.
When you have a close decision, you should call abet against weaker opponents more readily than against tougher ones: You can usually assume you are getting higher implied odds from a weak player, who is more likely to call your bet or raise when you make your hand, than from a tough player, who may fold his hand and not pay you off.
Two words of caution. Implied odds obviously cannot apply when either you or your opponent is already all-in or nearly all-in. Secondly, implied odds have little meaning when there is a decent chance that you can make your hand but still wind up second best. If you are going to take a short price from the pot in hopes of winning future bets, you had better be awfully sure that your hand will hold up when you make it.