There tousend examples out there of using AMF including
What is not covered or I wasn't enable to find is client with server data synchronization.
Example: How changes in db by some client affects display of other clients.
Someone would tell me to use BlaseDS or LCDS but they are overkill for most projects and not going to use JAVA(Adobe obvious turn to SUN) but most wide spread PHP.
I've tried to make AMFChannel with polling on ZendAMF but without success. I found in Zend Documentaion(very scarce one

)
CLIENT_PING_OPERATION = 5
CLIENT_SYNC_OPERATION = 4
CLUSTER_REQUEST_OPERATION = 7
DISCONNECT_OPERATION = 12
LOGIN_OPERATION = 8
LOGOUT_OPERATION = 9
MULTI_SUBSCRIBE_OPERATION = 11
POLL_OPERATION = 2
SESSION_INVALIDATE_OPERATION = 10
SUBSCRIBE_OPERATION = 0
UNKNOWN_OPERATION = 10000
UNSUSBSCRIBE_OPERATION = 1
....
When you use Flash Builder it generates Service based on RemoteObjectServiceWrapper which using RPCDataManager without autoSyncronization posibility.
I will experiment with DataServiceWrapper but I doubt I can trick Adobe to force me using LCDS

I seem they planing to do something or they have done it just who knows how to setup.
I want to hear your toughts Jorge too. (O man we haven't chat for 3 years)
Regards