It's been about a month since I've introduced the math-based comment authorization, and I think it works like a charm! Whew. It took me a while to figure out the best way to regulate comments for this site, and I thought I'd share some of the techniques I considered before settling on the math-based option. Rejected option 1: Q: Which word in the following sentence is a gerund? The princess was knitting a cape. Rejected option 2: Q: Translate the following phrase into Latin: Livia brought a basket of field mice to the bacchinalia. Rejected option 3: Q: Solve for X where Y is an imaginary number: 2(0.3y + x) = 14. Rejected option 4: Q: What is the airspeed velocity of an unladen swallow? Rejected option 5: Q: Rank the following cities from most to least populated, based on 1980 census data: Gary, Indiana; Eureka, California; Paris, Texas; Paris, France Rejected option 6: Q: What am I thinking, right now?