Please put me on your ping list if you start one.
I use keywords rather than a ping list.
http://www.freerepublic.com/tag/energy/index
http://www.freerepublic.com/tag/oil/index
http://www.freerepublic.com/tag/naturalgas/index
Whenever you feel like looking for articles on the subjects, just use those keywords. If you see an article on those or other topics without the right keywords, just add them.
This way it is not tied to one person and when they send it out. It also lets you find other previous articles on the same topic.