I am trying to manually post some comments to drupal blogs. I want to hide my ip using proxy. I have bought private proxies and I am using them through firefox. most drupal blogs have some kind of a spam protection that blocks people based on ip. No matter how many times I enter the captcha, it says "you entered wrong captcha" and will not accept my comment. All of Tor's ip addresses are also blacklisted so Tor won't work either. How can I overcome this spam protection? How can I get a clean ip address that has never been used to spam?