While I applaud the things above I'm concerned about Cludflare's (growing) size. If it handles so many websites' traffic it's an interesting target for NSA, hackers and other malicious actors. I assume that most of your users use the free SSL certs, meaning Cloudflare possesses their private keys.
The more Cloudflare grows, the faster and the more encrypted "the internet" becoems. But the more Cloudflare grows, the bigger the single point to attack gets (I'm even assuming Cloudflare is and always will be a good actor).
What's your stance on this? Could you comment on this?