Quote Originally Posted by Fnord
This, because you need to consider the range of hands you'll get to the river with and if the river completed any draws. Hence, it is sometimes more profitable (or a reasonable mix-up) to turn a pretty goodish hand into a bluff because pretty betterish hands fold. Also, you may be able to make a big value bet/raise expecting a worse hand to try to pick you off.
That's pretty Fnordish reply imo