There are always two sides to an argument, so check out these sites:
 
cropcircleresearch.com
Researcher Paul Vigay's site includes a freely accessible database of formations.
 
cropcircleconnector.com
The sprawling grand-daddy of crop circle websites, online since 1995 like us.
 
swirlednews.com
Believer bias rolling news service from crop circle researcher Andy Thomas.
 
temporarytemples.co.uk
Home of crop circle photographer extraordinaire Steve Alexander.
 
invisiblecircle.de
Focusing on the crop circle phenomenon in Germany.