When sending the email we try to find the most suitable questions for you to answer. It has been our experience that some people prefer to answer questions that already have answers, while others like to be the first ones to answer a question.
We tried to settle on a compromise, where the first of the three questions we send is always new (a few days old at the most), and two more questions that might have an interesting discussion going on, or what we hope might be the beginning of such a discussion.
For each question we send there is an "x" at the top right hand corner, and you can simply click it, and the question will not be sent to you again.