What should be our contained in our message, sent per email to newly registered users? A preliminary text is made here, but please help improve and complete it ...
Welcome to this question and answer site about advanced Physics, from graduate-level and beyond, including Theoretical Physics, Phenomenology, Experimental Physics, and Astronomy. On-topic subtopics will include String Theory, Loop Quantum Gravity, String Phenomenology, advanced Quantum Field Theory, Experimental Techniques, etc and for Physicists relevant Mathematical Topics.
If you want to know about physics at a simplified popular level, you can ask here
http://www.quora.com/
for more introductary than graduate level physics, you can go here
http://physics.stackexchange.com/questions
Purely mathematical questions that do not have to be of interest for physicists are discussed here
http://math.stackexchange.com/questions
or at research-level here
http://mathoverflow.net/
Thanks for your registration !