In order for there to be a history, there would first be a few obstacles to get over: "What are you, stupid? I said it wasn't investment advice. Sue if you want, good luck finding a lawyer to take the case."

Okay, potential plaintiff found a lawyer who will take the case. It would still need to go before a judge who didn't immediately laugh it out of the court room.

After all that, then you might find a court case recorded somewhere. Let us know what you find.