[SoftwareMaven]

You get a popup asking which app to use. I don't think there is a "save as default" because that would necessitate a way to manage those defaults, which would expose the underlying mechanism to users, something Apple is generally averse to doing.

The reality is that it doesn't get used a whole lot. Browsers, Dropbox, and other apps of that nature tend to provide the data while miscellaneous apps consume it.