Jason embeds content from all over the place. If you load the page while running Chrome's developer tools open to the network tab, you can see the wild variety

Jason embeds content from all over the place. If you load the page while running Chrome's developer tools open to the network tab, you can see the wild variety of hosts being touched. Many of these will involve separate DNS lookups and TCP/IP connection overhead. I've always viewed it as a consequence of his format, and well worth the wait.