I have to admit, I'm totally amazed about the number of people that participate on the QoD and on Polls on linked in.
I'm also amazed at the number of wrong answers. Why would anyone guess on a QoD like this one if they didn't have the hard knowledge with here or on the LinkedIn Polls?
Here, on the QoD, I can may see "guessing" because everyone knows that there will be an explanation and usually a link. It's an easy way to NOT developer any addition search skills.
For LinkedIn Polls, I have no clue why people bother because I've not yet seen a Poll Author that comes back with the correct answer, an explanation, or a link.