title: CDN: "Origin pull" service providers?
body: <p>Does anyone know of inexpensive "origin pull" CDN service providers.</p>
  
  <p>The only provider that I've found that provides this are <strong>SimpleCDN</strong> and <strong>Akamai</strong>. Akamai is crazy expensive and SimpleCDN seems to change their business model daily, so I'm concerned with using them.</p>