This are all common ways of protecting oneself which has been discussed individually, having a single thread which comprises each point is very useful and would help newbies.
Hi All, I added one more point (point 11) in this list, Pleas feel free to give suggestion, I will like to make this list to cover all possible scam so we will always be aware.
You do not have to quote the entire first text to do this, it makes the thread a little stretched.