You've just installed BonjourFoxy

Here's a few things you may want to configure...

Avoid the View→Sidebars menu by adding a button the toolbar.

A or will appear in the bottom right-hand to indicate whether services are available.

Get a visual notification when a new service is discovered.

These settings and more can be set by going to the Extensions section of Add-ons (Tools menu), selecting BonjourFoxy and then PreferencesOptions.

For more on the extension head to http://www.bonjourfoxy.net/