[imported_silkroad]

OBTW, I am working on a PHP script that checks the performance of the CDN, and if it not performing, it changes our $vbphrase[image_server] and $vbphrase{client_scriptserver] and the RRs to another server (or back to the original server).

I already have this script working for our OpenX servers, and when there is any issue on the net, it automatically switches over to another server (we replicate the database), or back again.

It is not that much work to even check one CDNs performance and if not up to some standard, switch to another CDN. Then, when the cheaper CDN is performing again, switch back over to that one.