Origin of advertorialadver(tisement) + (edi)torial.
advertorial - Computer Definition
(ADVERtisement ediTORIAL) A printed or online ad that reads like an editorial but is touting a specific product or service. Advertorials are paid for by the vendor. Depending on how it is written, it can appear as a strong opinion piece or obviously be an ad. Sometimes, people have to read between the lines.