There have been and always will be right and wrong ways to go about marketing on Facebook. The only things that change are the ways to go about doing the “right” things. While some would say there are no rules on social media, there are definitely best practices to do and poor practices to avoid.
Digg is dead. It isn’t coming back. The current model is fine for some but the thought of using the site to drive traffic, to get a sense of accomplishment for submitting front page stories, or of getting some strong interaction from the comments have switched to be the duty of Reddit. The new Digg is just a normal website with some cool features. It isn’t special.