WARNING! DO NOT CLICK THE "EXCLUDE" LINK if you have anything other than a basic WP site on your server - this will hang your browser indefinitely.
It's hard to believe anyone with a decent sized site would find this useful. While I applaud the developer(s) for 'trying' to provide a reasonable back-up solution for the masses, this thing fails miserably. Barebones functionality with the Exclude nailing the coffin shut as it tries to load a listing of EVERY file on your server, instead crashing the browser.