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.
According to Everydayhealth.com, a cyclist burns about 5.5 calories per hour per pound of body weight riding between 16 and 20 mph. Riding between 12 and 14 mph burns about 3.6 calories per mile per pound. In other words, a 130-pound woman burns about 715 calories riding 17 miles in one hour. If she slows down to 13 mph, she burns only 468 calories per hour.