At this point, nearly every online service should be considered hostile. If they can make a small amount of money by compromising your privacy or your identity, they will. If they can make a small amount of money by stealing your attention and addicting you, they will.
Are there exceptions? I'm sure. Will I be erring sometimes by being cautious? Definitely. But, there is really not much of an alternative these days.
Are there exceptions? I'm sure. Will I be erring sometimes by being cautious? Definitely. But, there is really not much of an alternative these days.