In this context, they're asking for a summation of the overall meaning of your argument. Are you arguing for or against a certain subject, what do you feel about that subject, and why do you feel that way. These days, especially on the internet, a growing number of people seem to be arguing without any sort of point. Especially in the political realm, people disagree with anyone holding a dissenting view simply BECAUSE they have a dissenting view, and will disagree with anything said, without presenting any reason for doing so, or counterargument to the original statement. If someone is arguing without a point, there's very little to be gained from continuing the argument.