Precision Mazes
The bottom of that article had a link to a company called Precision Mazes, whose specialty is "Creating Custom Corn Mazes Using GPS Technology". I interpret that to mean that they can create crop circles on demand. Their sales pitch is interesting:
Our distinctive method enables us to create elaborate maze designs in a matter of hours. This allows you to focus your energy on what truly impacts your bottom-line - marketing and promoting your maze - instead of long hours laboring in the field.
What do you think of these people? Are they cashing-in on the crop circle phenomena? Are they muddying the waters for you? Could they, and other people using similar techniques, be the explanation for all crop circles?
Enquiring minds want to know!