I agree with David. They send publications anyway (sometimes I wonder if they send more when I don't subscribe, trying to get me to subscribe) and I'll look at an ad or two, but when I want real info I come here.
I come here if I need specific information. The ONLY magazine I subscribe to is Rollingstones - I wouldn't waste money on anything else because they are just full of advertisements. When I need real information on products, etc - experience tells me I might as well as real people.