I have a test for my guess. Flash 9 player does send _url of an swf file as the referrer in http headers rather than a null one in Flash 8!!!
a beautiful 25" x 26" calendar for 2007, offered as a free PDF download or professionally printed for $16. the design is not meant as a sterile design object, but rather as a sort of graph paper for personal life: people are invited to invent their unique, personal visual code: they can bracket trips along perimeters, circle birthdays, arc weekly meetings, mark time, & so on.
[link: informationesthetics.org|via boingboing.net]