A quick dig reveals that to be the fault of Posterous, not CloudFlare: $ dig blog.cloudflare.com ... ;; ANSWER SECTION: blog.cloudflare.com. 21

A quick dig reveals that to be the fault of Posterous, not CloudFlare: $ dig blog.cloudflare.com ... ;; ANSWER SECTION: blog.cloudflare.com. 21 IN CNAME blog.cloudflare.com.cdn.cloudflare.net. blog.cloudflare.com.cdn.cloudflare.net. 21 IN CNAME cloudflare.posterous.com. cloudflare.posterous.com. 1243 IN A 184.106.20.99 So it looks like requests are going directly to Posterous. Seems like an obvious place for CloudFlare to showcase their speed.