Here are sites that are daily updated with fresh verified proxies, mostly used for Scrapebox, but also can be used anywhere else.
Code:
http://www.scrapeboxproxies.net/
http://bestproxysites.blogspot.com/
http://www.live-socks.net/
http://www.pr0xies.org/
http://proxyserverlist.blogspot.com/
http://www.socks5list.com/
http://www.vip-socks.net/