I've gained the privilege to vote up on Stack Overflow.
I've seen this question, but not only it's worded differently, I also don't have 5k reputation as the questioner (not even one tenth of 5k), so I don't know if it's a bug or it's some sort of ironic way of telling me to vote up once in a while.
The latter sounds possible because I'm not that active (yearling with just 500 rep!), but I do vote up more than I vote down.
Bug? Only happening to me?