 The RIAA uses systems to gather lists of alleged infringers, and bulk-sues them.It has set a price that seems to be profitable for it, while being low enough that it is not profitable for the accused to mount a defence, as they do not get the economies of scale involved.Spamigation is similar to a strategic lawsuit against public participation ("SLAPP"), which is filed by a large organization, or in some cases an individual plaintiff, to intimidate and silence a less powerful critic by so severely burdening them with the cost of a legal defense that they abandon their criticism.