If a company or individual posting to craigslist is having trouble with competitors, fake posts, harassment, etc., there are a number of ways to get things done. I'm sure that Craigslist, like every other site, makes people jump over a few hurdles before they can get in touch with a live human.
Calories Burned. On average, a 150-pound person burns 91 calories biking for 20 minutes at a leisurely pace of less than 10 miles per hour, according to the Calorie Control Council's Get Moving Calculator. The caloric burn increases to 136 calories when intensity escalates to a moderate pace, 12 to 13.9 miles per hour.
A 180-pound person will burn 490 calories per hour at that cycling speed. At 14 to 15.9 mph and a weight of 130 lbs., you burn 590 calories and a 180 lb. rider burns 817 calories per hour. For weight management, how much you should cycle every day depends on how many calories you want to burn each week.