DRAFT Magazine is a glossy, advertising-heavy magazine about beer (much like Saveur is for food). A couple of years ago, they gave me a "free, six-month subscription" to the digital edition. Since they still send me an email with a link to each issue and the links don't attach to an account or require a login, I'm assuming that the "subscription" is more of a mailing list.
If reading about boutique beers sounds entertaining to you, here's a link to the
September/October 2013 issue. It's a Flash application with the option of downloading a PDF. The archive page has links to back issues, so you can use this issue's link as a landing page without giving them an email address if you want to check back every couple of months.
If you want to be reminded, there's
a link at their
website where you can enter your email address for a "free preview issue" of the digital magazine. I don't know for sure, but I'd bet that you start getting emails for each issue.