SecurityToken.getDomain vs gadget iframe's "container" param

[Jamey Wood]

Is there some relationship between the "container" param when a gadget 
is rendered (e.g. "ifr?container=shindig") and the associated 
SecurityToken's domain value (e.g. "SecurityToken.getDomain())?  At 
first glance, both seem like ways to allow the Shindig server to 
customize its behavior for the consumer in some way (such as assuming 
there are entirely different social graphs for "container1" and 
"container2").

Thanks,
Jamey