Once you install this plugin it adds a new widget with site global statistics.
If your theme has a sidebar the widget is automatically placed to the bottom part of the sidebar.
For themes with no sidebar you'll have to go to the index page, press Customize page button and drop the Stats Widget manually to the place you prefer.

This plugin also makes available two additional pages with user listings, which may be useful for your community:
- New users today,
- New users this week.

Various metrics can be enabled/disabled in the admin panel on the plugin configuration page.
You can also choose not to display metrics with zero values.