If you manage many accounts and hit the same sites often, addresses from open lists fail on the first requests. A closed pool with SOCKS5 and HTTP spreads requests across thousands of addresses. For multithreaded launches, it makes sense to take a rotating pool with spare threads. Where to start: https://telegra.ph/HTTP-Proxy-Service-11-10 Addresses come from all over the world and traffic is unlimited. Traffic is not billed by the gigabyte. For Cheap proxies online the pool runs from the first launch.