WoD is a lightweight. You ought to take a look at the Secret Arts in Weapons of the Gods, or even the social charms and stuff in Exalted. Weapons of the Gods, by the way, has one of the best implementations of social fu that I've ever seen. It uses the same general conceits as for divination, and it's genius. The short form is that you can make a prediction about someone, with a difficulty set by how improbable it is. If you succeed, they have some choices. They can go against the prediction and get a penalty, or go along with it and not. I find this exceptional because the debuffs are useful but not character-breaking, and it doesn't fall into the trap of being mind control.
Example: You've got a courtier who wants to get with one of the PCs, and comes to your Secret Arts using PC for advice. You inform her that that PC has an affinity for the color red. Let's say there's some evidence for this, because of what the character wears and yadda yadda. So, it's not too difficult. If you make the roll, you're correct, that PC does have a weakness for red. If she wears a really slinky red dress the next time they meet, the player of the target has some choices: Roleplay his character to be completely taken with this crimson vixen, or accept some kind of penalty due to the distraction and struggling with his instincts.