Marvel Comics is running a promotion to celebrate their 2 million Facebook fans by offering 30% off their unlimited annual subscription. Use the code 2MILL2011 and sign up here.
This subscription offers over 10,000 digital comic books with more being added every day. You can read full details at Marvel Unlimited Subscription.
This is a great way to read current comic books without having to worry about storage issues, plus you get a great discount. The promotion runs through Monday July 11, 2011.