It is not generally known that how quickly site page displays contents is important not only for users, but also for search engines. An updated and well-made site can rank on the second page of Google only because it is very slow. Slow speed can also annoy users. Site visits are abandoned if pages take longer than 10 seconds to load. The good news is that to speed up a site it is no longer necessary to rebuild it: just connect it to a distribution network, called CDN (content delivery network).