Just because you intern at a fashion magazine that could potentially give your friend's lookbook or brand some much-needed press doesn't mean you are not obligated to do so. You don't need to pass along every single thing he or she sends you. If you push shit product, it means you have shit taste. Remember that. And if a fashion editor tries to explain to you why the collection or brand is not as good as you may think, don't argue. "But you don't get it, putting leather everywhere was one of the biggest trends this year!" should never come out of your mouth. Instead, try to understand where he or she is coming from, and if he or she is right, communicate this expert advice to your friends.
Don't use this solely as an opportunity to put your struggle designer friends on.