Another link for amazing online (free) magazines: Magwerk.com
I cannot say how impressed I am with the site and magazine, it uses Flash so the magazine animates and have sound! Seriously, you may be looking at the future of publication here. Some of the pages even have embedded video. Amazing.
To view the page you need to enter an email address, passwork, nickname, age & country. You then have to activate your account by clicking a link in an email. But I think the extra spam is worth it for such a beautiful (and free) magazine.