That's an easy one. Just down-vote the question and they eventually get pushed into oblivion.

BTW: I think you are right about people still testing out the site. I have posted a couple of questions that I could probably have Googled, but (1) I wanted to earn some reputation points so I could vote, and (2) I had been wanting to play around with some of the features of the site and posted a question or two more quickly than I ordinarily would on a discussion group.