See also: Malicious code | Ware | Bad Things
Software that installs itself secretly, like some spyware, but instead of showing users advertisements it hijacks affilate links to point to a third party, taking money from the original affliate.
Stealware could also be applied to what some would call resource theft, where the user‘s system resources (hardware and bandwidth) are used for the purposes of the application.
Stealware can appear in Shareware.
TakeDown.NET -> “Stealware”