Dot Net Remoting Question:

Marshal-by-value objects are copied by the remoting system
and passed in their entirety to the caller's application
domain. Once copied to the caller's application domain (by
the marshaling process), all method calls and property
accesses are executed entirely within that domain. The
entire object exists in the caller's domain, so there is no
need to marshal accesses across domain boundaries. Using
marshal-by-value objects can increase performance and
reduce network traffic when used for small objects or
objects to which you will be making many accesses. However,
because the object exists entirely in the caller's
application domain, no state changes to the object are
communicated to the originating application domain, or from
the originator back to the caller. Marshal-by-value is not
a good choice for very large objects with many accesses. It
makes little sense to marshal an entire large object across
domain boundaries when all you need is access to a single
field, method, or property.