One of my pet peeves is to receive an email newsletter that I never asked, never subscribed to, and I've never even heard of the website. Then at the bottom of the newsletter I see "this newsletter has 1 million subscribers" or something. Sure, they have 1 million or so readers because they sign up people that never signed up for them. It really ticks me off to receive these kinds of newsletters, more so when the newsletter will clog my inbox on a regular basis.
Is this strategy -- automatically signing up a person you think would be interested -- a viable way to grow a newsletter? I think it would just tick off people. What have been your experiences?