Right, I seem to have worked around it.
With the Activity settings I have Admins can post on Users activity streams and Users do not get emails. This is actually handy as it's like all Admins, Moderators, Managers can see each others activity or they post their activity or can post for someone to do something always linked to a User profile - so it is aptly named!Special Users can also comment on a post, even from their own profile.
The Write on Wall selection part of the Profile Wall is not pretty though, and confusing for a Joe Soap User. I may have to ask about this later on if I don't find anything on the forums, articles.
All the best
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