Inside your Wish List click "list actions". A pop-up will appear.
Next you need to click "Change privacy settings" to be able to override your Wish List's visibility.
Chose "Shared" and proceed with a click on "Save".
Next you need to click "Share". Another window will pop up. This one contains your Wish List link.
Simply copy the link displayed in that window and paste it in our input field on http://wish-li.st to beautify it.