at laughlab you can rate jokes to say how funny you find them or submit your own jokes for others to rate. it’s an experiment to try and find the world’s funniest joke (though they’re ignoring the rather large subset of jokes that they consider rude which spoils a lot of the fun really)

once the funniest jokes have been chosen, the scientists will read them aloud to a group of people and see how their brain activity changes using mri scans. … the experiment could reveal insights into the psychology of humour and which parts of the brain are involved.