My first rule for social media is, Never trust anyone. Especially those who promise a huge ROI without any effort on my part. I can never overuse my block button.
Thanks David for your advice will for me you have a big point in terms to avoid scam or spam is Never trust anyone I believe that's the way also to prevent ,cause I believe scammer is more than wise on us once you are easily give information to them they had a guts thay they can easily access you information.