Doesn't do anything at all. Looking at the code, it only acts on text input when the widget name is one of firstName, lastName and email. It is NOT possible to add custom fields to fill at a given URL.

Does Absolutly Nothing, there is ZERO options. Whats the point of this extension ?

This does nothing. Literally, nothing at all. Don't bother.

Didn't work for me, I can't even go to the setting to set my information, I click and nothing happen...