Neighbourhoods Enabled – What Does It Do?

I have just enabled the Neighbourhood option, but other than it now gives me a Neighbourhood field when I go in to edit the one listing I have added so far, I don’t see any other changes on the listing, map or search box.

My questions are:

1) Should the Neighbourhood now appear as part of the URL slug (it doesn’t on mine, so I just wanted to check)?

2) Should the Neighbourhood name appear as part of the Breadcrumb trail (again, it doesn’t on mine)?

3) Should there now be added options on the map or search to restrict to the Neighbourhood only?

Thanks!