Just a heads-up: that's not a valid shareable link on gingko. What you need to do is go in the "Settings of Current Tree", and make sure it's set to "Readable At". You can set a name for the tree there at the same time, and it'll give you a link in red. This is the link you have to give others for them to view the tree.

Your current link simply takes us to the Gingko front page or to our own homepage.