Web Service API that supports AMF Remoting?

I’m curious if there is a major (or minor) Web Service provider that allows AMF Remoting? …as a Protocol?

For example, Digg has its http://apidoc.digg.com/Toolkits#FlashDevelopmentKit
but thats just an API Kit …not Remoting …right?

Edit: well, AMF has been open sourced (AMF3) so, if there isn’t a Service now for it, I suspect there will be soon. I guess I should really be asking if there is a major Service that allows RTMP (Real Time Messaging Protocol) …the ultimate resource for data animations