The 11th commandment. Don't make websites where you have to email or call to stop a monthly subscription. It should be easy to do. This is one reason people hate trial versions that ask for cc numbers.

Not enough people care enough to make a big stink about it. Until that happens, it will still be profitable, so they will keep doing it.

I think it'll get a lot worse before it gets better.

@bahua you are right. I worked in payment processing and the processing of cards follows pci rules for example you have to display the final cost and you must receive confirmation of the payment. We need some of these safeguards on ecommerce sites. I would also like a dashboard for viewing all ongoing charges.