It may have been carried over from the previous site.. i.e. grandfathered in.
Yep, that appears to be the case. I heard back from the site admin that they don't allow links to any commercial sites. That doesn't solve the question of non-commercial sites, but I'll let someone else figure that one out.
Thanks, all.
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"PhoTow" - 2014 Ford E350 5.4L RB Agile 4x4 - a Multipurpose Transformer Photo Rig