Yes, Greece had riots in 2009. I expected increased civil unrest in developed countries in 2010. My impression is that there is more civil unrest in Greece now than there was last year but I don't know how to objectively measure that which makes me think I was not specific enough with my prediction in this case.

Since nobody took the other side of the bet it doesn't matter too much. I'm more interested in how my investments pan out as they represent real bets on my predictions - it's not much use being right if you can't turn it into profit.