How well do you know PegaPoll's ad formats?

Four questions about the ad system. While you answer, you will run into several of the formats yourself.

1. Which format appears BEFORE the results, with a skip delay?
2. Which format stays visible throughout the whole fill?
3. By what factor does an item's weight grow when the reactive rotation hits?
4. Which limit is enforced by the server, not by the respondent's browser?