How can shilling be done transparently, someone hires so many low ranking accounts to sneak in the name of their service in almost every post they make, now they are not checking the quality of the post, but they just want the name of their service everywhere. That is vile advertisement, and bad for the forum, especially based on the quality of posts that shillers produce. If a service wants quality advertisement in the forum, then they have to at least run a signature campaign.