Free residential proxies are generally less reliable and come with significant risks compared to paid ones. Performance: Free proxies often suffer from slow speeds, limited IP pools, and frequent downtime. Security: Many free proxies lack encryption and might log or misuse your data. Ethical Concerns: Some free services use unethical methods to source their IPs, such as botnets. ... http://blog.piguse.com/blog/network-basics/selection-and-configuration