Generally those are for convincing NPCs, who are forced to believe if they fail a sense motive check. That's what makes us<strong>heroes </strong>:D<br/><br/>Otherwise, the BBEG with the tricked out Bluff check could just come up and say, "This reality is false, you're really asleep surrounded by people you trust and loved ones, lie down and accept this spell so I can return you to them, I actually want to help you," and you'd do it and then you'd die.<br/><br/>So no, I'd say the Bluff skill (and other social skills) have no effect on PCs unless you use the combat application of them (feint, demoralize, etc).