Can we keep Cloudflare on after these ddos attacks are gone or does it cost extra money to keep Cloudflare ddos protection activated?
One of Google's primary ranking metrics is how fast it takes your site to load content. This greater emphasis is fairly recent.
Try as I might any solid documentation/studies to show if Cloudflare's 'checking your browser' impacts Google's ranking of the site.
Under normal circumstances (that is without the browser checking) CF can even help with your ranking by loading it faster from the CDN. That's a given and there are all sorts of results for that.
Ideally, CF would whitelist all the Google crawler IP addresses and let those through without adding additional checking time.
I can find exactly no solid information about this. None... SEO is very much a blackbox kinda deal, though Google is generally kind enough to provide some hints. They were even kind enough to tell us that they were placing even greater emphasis on site loading times.
If, and that's just an if, Google crawlers are delayed by 5+ seconds, that will make Linux.org plummet in the search engine results. Temporarily, it probably won't matter. Long term? It'd be bad and Linux.org would lose the coveted #1 slot for "Linux" at a few search engines.
I started looking this up when Rob first enabled the additional protection and found nothing. I just spent another 15 or so minutes going through various keywords and search results, with nothing popping up that offered any great insight.
Part of the problem might be that the search terms are saturated with how CF can help your results - which it can, of course.