on 06-05-2012 04:24 PM
As many as they publish. Depends on the periodical type. For a daily paper, up to 14. For a weekly, two. For a monthly, one.
You will need to remember to cancel before you pass the 14th day. I would cancel on the 13th day to be safe. Once you pass 14 days, you'll be billed.
I've only tried it with my local newspaper, and let it run for 10 days. Showed up every morning. Some time later, I subscribed for good.