Re: El Reg is a customer of CloudFlare and uses its content-distribution network.
"I quite regularly visit sites protected by CloudFlare over Tor, and have done so within the last couple of days."
Yes, I'm aware that they've recently changed the captcha so as to be easier. They used to be completely insolvable. Now they often work, though I just now checked and it took me about 5 tries. In any case, it makes a clear statement that CloudFlare and The Register do not support good security and wish to discourage those who do. Shame on them.