I would also like to see how exactly they define "grumpiness". It could be that they view being argumentative, questioning, challenging assertions as being "gru

I would also like to see how exactly they define "grumpiness". It could be that they view being argumentative, questioning, challenging assertions as being "grumpy", which would surely describe many of us. Also, weird how they chose only Israelis to question. Check out this interesting study: "You Are Where You Edit: Locating Wikipedia Contributors Through Edit Histories": http://www.umiacs.umd.edu/~jimmylin/publications/Lieberman_Lin_ICWSM2009.pdf http://www.umiacs.umd.edu/~jimmylin/publications/Lieberman_L...