Often when someone confides in you an issue that they have with another
person, they chatter just enough information for you to agree with them
because it momentarily boosts their self esteem to hear someone cheering
on their side. What's the point? Share the whole story if you want true
feedback, otherwise keep it to yourself because later you'll feel just
as crappy knowing the full truth... And thanks to humans being
incredibly impressionable, it could unfairly tarnish a person's view of
another.