Idiot Nation has announced they are giving away sets of Green Day postcards to 45 people who submit their information on the official fan site.

It isn't exactly clear what images the postcards contain as the picture provided by Idiot Nation is very small. But hey, it's Green Day stuff, so we won't complain. Whatever it is, I'm sure it's cool.

If you're already a member of the site, head on over to the site and submit your entry. The 45 winners will be chosen next month on May 16th.

If you're not a member, you can sign up here.