Decided to have a look at a list of "open" proxies. I've noticed that a good deal of these proxies are on residential IPs.
One of the IPs, 18.104.22.168, is owned by Charter Communications and looks to be the IP of someone's house. It looks to have a few other random ports open, such as a VPN, telnet, and an additional HTTP port.
So, whats the point of setting one of these up on a home network? These proxies tend to be used by attackers to mask their true identities, and likley attract a lot of malicious traffic. Do they serve as honeypots for criminals? It seems to me that the only result of setting one of these up would be a knock from the police or an ISP.