Seems like Cloud fare Want more money .....
Message on their website:
Please contact us if you have a CDN that is capable and willing of serving 1.8 Petabytes of outgoing traffic per month free of charge, or
if you can make a donation to help us pay a monthly $12,000 bill from CloudFlare that we are now facing.
What's happening? read in full >>>
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There is affiliate advertising banner all over their site . This should cover most of that server bills?