Do not post on activity "walls"
Please do not use the activity "walls" for personal messages. The activity "wall" is that big text entry box that appears on a users profile page. These posts are NOT private, and the intended user may not see the message.
The Private Message feature can be reached by clicking the "Message" button instead.
I know that is confusing. The activity "wall" is a completely useless feature of the Vanilla forums software. The more I use this forum software, the more I hate it.
So far the these "walls" only attract spam, harassment, useless crap, and people mistaking it for Personal Messages. Although I did find a setting to hide the "Activity" tab from normal users, there seems to be no setting to disable the "wall" feature.