Kill Hannah Sites:
KillHannah.com - Official KH Site
Sour.org/KH
NerveGas.org
Alternative Reality
Oak Park Kill Hannah Street Team
killhannah.de.vu - A German KH Site

Other Stuff:
BillyCorgan.Com
Siva - Smashing Pumpkins website
Pumpkinheads - A Smashing Pumpkins community
Dizzy Violets - Orgy website
Ash's Orgy Candyland - we love ash :D