This smoothly named little script will allow you to quickly connect an object attribute to an attribute on many objects. It's good for connecting a control curve attribute to visibility or smoothing (etc.) on lots of objects.
1. Select an object and attribute on it or one of its related nodes in the channelBox and click "Select Driver Attribute".
2. Select one or more objects that all have in common the node type to which you wish to connect the driver attribute and click "Set Connected Objects".
3. Select the attribute in the scroll list to which you wish to connect the driver and click "Connect" to make the connections.
Note that there's currently no type checking to ensure that the nodes are of the same type and connectable. I leave that to you.