As the site it right now, one can only find his or her way to the net install CD from the main download page by noticing the little "All download methods" link on the lower right. The "Fedora Downloads by Format" page [1] seems to be a logical place to put a link to the net install CD image; perhaps that would make it more accessible.

[1] http://fedoraproject.org/en/get-fedora-options#formats