The hack I use for subscriptions is to pay with a money order, mailed to their location. This makes it impossible for them to autorenew. I started doing this after discovering to my dismay that one subscription used my checking account routing number to auto debit a subscription renewal the following year, at a significantly increased rate, direct from my checking account! I don't see how this isn't larceny or bank robbery.

I also track who is selling my name to marketers by using initials. So my subscriber name instead of Bob Jones is Ned Y. Jones for the NYT sub, Will S. Jones for the WSJ sub, and Roger D. Jones for the Readers Digest. Then when I get mailed an ad for sex toys advertised to Ned Jones, I know the NYT sold my name to them.