Looks like the best approach here is to integrate the Alfresco portlet into Liferay. Liferay's IM client certainly seems to be able to do the job. However, I am wondering how much of the richness of the Alfresco document management and other capabilities would get lost inside Liferay. But that's for a different discussion thread.
Has anyone tried to implement the Meebo Me widget as a custom dashlet? Would that be one way to implement IM, despite Meebo being quite insecure?
