Quick update - fresh proxies pulled this morning, dead ones trimmed. Ended up with 99 verified proxies from 31 different countries.
Rotate frequently and don't hammer a single proxy - they go down faster when overloaded.
For anything serious (SMM, ad verification), free proxies won't cut it - MobiHub's mobile IPs are far harder to block.
Scroll down for the proxies. New batch every few hours.