Hi,
We use
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
and it works great. The pages become 30kb-50kb longer, because the components tree is serialized into the HTML page instead of the session, but the multi-user-capacity increases, because the appserver has smaller sessions.
Greetz,
Ganesh