How to contact other members
The simplest way to contact another member is to navigate to the people members page, either from the Org Menu or through the links at the top of the main page. Select the person you want to contact by clicking on 'more...' then there is the option to send a message.
Message to all
To send a message to all members of a site naviaget to the people menu then select 'Message to all', for security reasons, you may be asked to confirm your username and password.
With group messaging you can colate members into groups then send messages the group only. These groups can be named and saved for easy recall.
First go to the people members page then choose 'show groups' from the links menu. You can then use the radio buttons to indicate who you want to incude in the group. At this point you get the option to either send a message to the group or save the group for future use. When saving you can give a title and brief description. You also get the option to make the group availiable to other members.
When you next go to the people members section you will see a link to the group.