If you click on an ad that asks for a credit card, read the fine print. If after so many days you WILL BE charged the montly fees, or sometimes annual renewal all at one time, racking up credit card fees and so on. Sign up for the free trial, but keep in mind that you must cancel and actually print out the page where it defines how to cancel, and cancel. No worries, no loss, no problem.
Has anyone had issues with this in the past? It happened to me one time where I forgot to cancel the free trial and it took forever to cancel, had to call, email and send letter for request.