Right, here's what I want to do:
After having created a user with a specific role ("Advertiser") I would like to have a node (with a content type called "Advertiser") created.
This works fine, but how would I go about automagically populating the user id of the Advertiser entity?
Assuming I have to create a field of type Entity Reference in my Advertiser entity, but what else?
I've installed Rules and Entity Reference modules.
Any help is appreciated.