Well… I am working on alternatives to make OWN CDN…

I have few options to create such CDN

* Google App Engine

http://24ways.org/2008/using-google-app-engine-as-your-own-cdn

http://www.digitalistic.com/2008/06/09/10-easy-steps-to-use-google-app-engine-as-your-own-cdn/

* Amazon EC2

* Wowza

http://www.wowza.com/forums/content.php?81-How-to-achieve-the-lowest-latency-from-capture-to-playback

* GeoIP, NGinx, Bind, Varnish

http://blog.unixy.net/2010/07/how-to-build-your-own-cdn-using-bind-geoip-nginx-and-varnish/

http://www.caraytech.com/geodns/

https://www.varnish-cache.org/

* ONApp

http://onapp.com/cdn/pricing/

http://cdn.onapp.com/files/datasheets/onapp_cdn_datasheet.pdf

Some Open Source to create CDN

http://www.fromdev.com/2011/06/create-cdn-content-delivery-network.html

http://labtel.ing.uniroma1.it/opencdn/

http://www.coralcdn.org/

http://cacheboy.net/

http://code.google.com/p/phloem/

Other Resources

http://serverfault.com/questions/244158/how-to-create-my-own-cdn-or-private-cloud

http://nixcraft.com/web-servers/17014-creating-own-cdn-using-nginx-possible.html

Limitations
* Performance that you get from a professional / Commercial CDN
* Smart DNS
* Edge points
* Caching server – squid or nginx