Pay-Per-Install.org stands out as a malware flea market where shadowy pushers of Trojan downloaders and tools for evading detection are bargaining with thousands of would-be affiliates willing to compromise victims computers globally and get paid for it. Top dollar goes to anyone who can compromise computers in the United States. Those who do the dirty work are paid $140 for every 1,000 U.S. computers they seed with bits of malware.
Source: https://threatpost.com/malware-flea-market-pays-hackers-hijack-pcs-100709/72306/