Ben has been promoting psi research since 2008. See his review of Damien Broderick's book on psi.
Robin would suggest betting, I think.
The obvious way this game is played is to offer specific bets, with specific odds and amounts. Then wait for a counter offer, or the absence thereof.
Ben Goertzel has a rather long psi-related article in Humanity Plus Magazine, apparently prompted by the recent precognition study to be published in Journal of Personality and Social Psychology. He's arguing that psi is real and we should expect to see the results of this study replicated.