Hate to be a party pooper & I think it's nice fans are being involved etc. but when Michael performs the songs, I like to know/think he's chosen them for a reason. So if he opens with Unbreakable it's because he's feeling it and it means something, not because it was voted for by other people.
It loses abit of artistic integrity for me because the setlist is so important and artists choose particular songs in a particular order to evoke a certain reaction/emotion.
If fans have influence over the songs and order, I feel like he just a puppet. He's not doing the songs that mean the most to him.
Then again it may all be a PR stunt to engage fans and the setlist is already done & dusted (because surely rehearsals must have already started??).
Having said that I'm a complete hypocrite cos I still voted (if you can't beat em...).