To my surprise it’s worked very good and was incredibly easy to setup. All you do is transfer your DNS to them, and they take care of the rest. It’s like magic. It’s been working so great and easy that I thought it wasn’t doing anything!
But it is, and it’s reduced the load by about 50%. A small fraction is the bots being blocked, but the majority is the system caching content making it faster and reducing our bandwidth bill. Cool!
Without going into details, I haven’t tried it with any of our traffic exchanges. We have a unique situation where at the present time CloudFlare wouldn’t work with our setup, but I am working on it so we can. The benefits so far have been worth it!