I received an email from Lessiter Media Chairman Frank Lessiter over the weekend talking about the success they've been having with quizzes in the last few months. So, of course, I had to take it.   Quizzes are one engagement element that can still be effective now—and frankly can bring us a little relief. (I've read that jigsaw puzzles are also reaching new popularity heights.) In fact, this morning, a sports station here presented the most compelling content in weeks by doing quiz questions to callers. And trivia nights have already found a comfort zone online—one friend just gave a thumbs-up testimonial for one and forwarded it to me. They're charging $18.   "Hey, it's Frank!" a pop-up emerges with his photo when I go to Lessiter's no-tillfarmer.com. "Have you taken the 12-question quiz, 'How Much Do You Actually Know About Cover Crops?'" It takes less than 5 minutes to complete and we'll se ...