I think this is a great new feature, but it could be improved in two ways: 1) make this an automatic feature that can be turned on or off. As it is now, you have to click this button on every page to turn it on, and then hit another button to turn it off (though I don't know why you'd want to). This can only be done one page at a time - which just seems to be time consuming and redundant. 2) Allow for relationship calculation between two people of my choice, not automatically between myself and another person.
Here's a screenshot of the new feature: