How many people here use WP Photon CDN? It sounds absolutely fantastic, but I'm not sure why WordPress would let everyone with a WP site use it for free. Considering CDN bandwidth is generally pretty expensive. I'm planning to implement it on my existing site that already runs NetDNA for caching of all theme files and Cloudflare for fewer requests and some CDN on most of our image-based content.
Has anyone tried using all three at once? In theory it should help with page speed by serving images through the CDN that Cloudflare would miss but could this be too many CDN services for one site?