Angie's List will keep charging you even after you cancel your subscription or "discounted trial". My advise is to pay by paypal so that you can contact them when angie charges you again and again after cancellation.
The nominal fee that you will repeatedly refute, at first, won't seem worth the time but will quickly accrue. Angie's banks on their customers being either busy or lazy. Caveat emptor!
I believe that this accurately describes my experience with angie's; I'm adding these thirty characters to meet this website's minimum character requirement. Sometimes a short and to-the-point review is better received...and read.
Product or Service Mentioned: Angies List Membership.