"Free" offers on the internet often come with annoying trials and lengthy cancellation procedures, but this one here's legit -- it's actually running from the subscription web site of the publisher of EGM, Ziff Davis Media.
You may have seen this offer for 12 free issues of Electronic Gaming Monthly on Joystiq or other game sites out there. Basically, what's happening is the Ziff Davis Game Group is running a subscription drive for the mag, sponsored by the World Cyber Games. Free subs are only on offer through today, however, so get a move on if you want a piece of the printed action.
Of course, EGM may be no OPM, but it's helpful for even the healthiest fanboy to get a balanced diet of multiplatform news and information on a regular basis. Also, please note that you're under no obligation to sign up for the World Cyber Games page which follows the EGM subscription one, so you can absolutely get your free mag without registering with the WCG.