Complex sentence: First users should block all pictures and information others can see or gain knowledge about the individual from their profile, this will ensure that people you do not know or who are not your Facebook friends from being able to stalk you.
Split into simpler sentences: First users should block all pictures and information others can see or gain knowledge about the individual from their profile. This will ensure that people you do not know or who are not your Facebook friends from being able to stalk you.