There was a very subtle bug involving php and the MTA we use that affected the formatting of the pix01 emails as well as the ability for hotmail to receive them. That's been fixed so now the formatting should appear correct and hotmail users will get the Pix01 email now (though they may initially go to the junk box based on the fact that MS sender ID needs to be convinced by many people saying "trust this" source).
Anyway, if you get one in the junk box, click the "mark as safe" button and all future deliveries will go into the normal inbox.