Here's a step-by-step SEO tutorial which will get you highly ranked every single time.
We currently have a community chat website that is frequented by many people using VPN to bypass bans. They use such services as [đăng nhập để xem URL] or Tor Exit nodes. We want to have a system that will detect anybody using a VPN service or similar and not allow them to use our chat application. We have several chat applications. One is built with flash