
http://www.sum-ripoff.tk/

anyways, what do you think? coincidence or rip-offs?
amazon.com wrote:GREEN DAY:
1039 / Smoothed Out Slappy Hours - Release Date: July 1, 1991
Kerplunk - Release Date: January 17, 1992
Dookie - Release Date: February 1, 1994
Insomniac - Release Date: October 10, 1995
Nimrod - Release Date: October 14, 1997
Warning - Release Date: October 3, 2000
International Superhits! - Release Date: November 13, 2001
Shenanigans - Release Date: July 2, 2002
American Idiot - Release Date: September 21, 2004
SUM 41:
Half Hour of Power - Release Date: June 27, 2000
All Killer No Filler - Release Date: May 8, 2001
Does This Look Infected - Release Date: November 26, 2002
Chuck - Release Date: October 12, 2004