I added a free CloudFlare Account to tortui.com and blog.tortui.com (this site). According to the email I received after signing up this is
What CloudFlare Does:
CloudFlare uses a CDN-like infrastructure to make your site load faster. The improvement in performance means your visitors will stay longer and our caching mechanisms will save you CPU and bandwidth resources.
CloudFlare protects your website by repelling known attackers and blocking web spam. You can set your website security level to high, medium or low.
CloudFlare shows you more information on all the traffic coming to your site. In addition to visitors, you get interesting statistics on search engine crawlers and threats coming to your site too.
CloudFlare Terms of Service:
By creating this account, you accept CloudFlare’s terms of service. We urge you to review the terms of service here:
Please read these recommend tips after joining CloudFlare: http://blog.cloudflare.com/cloudflare-tips-recommended-steps-after-activ
We are constantly releasing new features based on user’s feedback. We encourage you to keep in touch: