Some background info on what Cloudflare does.
CloudFlare protects and accelerates any website online. Once your website is a part of the CloudFlare community, its web traffic is routed through our intelligent global network. We automatically optimize the delivery of your web pages so your visitors get the fastest page load times and best performance. We also block threats and limit abusive bots and crawlers from wasting your bandwidth and server resources. The result: CloudFlare-powered websites see a significant improvement in performance and a decrease in spam and other attacks.
This sentence "
We also block threats and limit abusive bots and crawlers from wasting your bandwidth and server resources." is what they are doing when they present you with a CAPTCHA challenge page.
Cloudflare has a database of IP addresses which have caused problems in the past. If you happen to be connected to the Internet via an IP address previously used by an offender, it throws up the CAPTCHA challenge.
From today, the Cloudflare settings have been changed to (hopefully) significantly reduce the number of these CAPTCHA messages for visitors to douglasmotocycles.net.However, in some circumstances, it is possible you may still receive a CAPTCHA challenge page. These circumstances are as follows.
If a customer of your ISP using a shared IP address, has caused a
significant problem in the online world, that shared IP address is recorded in a database of offenders. If you then happen to connect to a Cloudflare protected website (eg douglasmotorcycles.net) using that same shared IP address, the CAPTCHA challenge page will appear as it can't tell the difference between you and the original offender.
There is another step that can be taken to further reduce the chance of you receiving a CAPTCHA challenge page. It needs to be applied individually to your particular situation.
If you still receive CAPTCHA messages after the change made today, please post back here or contact me via PM and I'll be happy to try and stop CAPTCHA messages for you completely.
Dave
Please note: The changes made today only apply to douglasmotorcycles.net. I can't control or help with Cloudflare CAPTCHA messages generated when visiting other websites. If you regularly receive these messages when visiting a range of websites, I recommend you contact your ISP about obtaining a dedicated IP address so that you are the only user of that IP address and your identity can't be confused with anyone else.