All this features you have there are for Noobies scammers who can easily be fished out by those things that are obvious and even someone who is not techie can find out even without too much stress because I have seen several scams carried out that was able to bypass all those and more checks. However, I would say there no sure way to stay away from scams but it can be controlled with being careful and reading the constructive criticisms by reputable members and others with content.