It has the ability to go even further than that. Once something has reached some ill-defined level of media coverarge, it's eligible for inclusion on Wikipedia, which then populates Google SERPs and all manner of other services. (And in Wiki's case, even if someone figures out the BS, they won't be allowed to do anything about it because the non-media coverage counts as "original research")

Granted, this generally won't happen unless an actual shill for whatever cause is editing the site, but still. Misinformation has never been able to move faster.