I've had a crap time recently on an online support group (think physical health, not mental health/substance abuse etc). I've never posted anything horrible to anyone online (or in real life if you see what i mean) and I'm not going to get dragged into it so I'm posting this here instead, hopefully it will help someone's day as well as mine.
Sometimes when someone's having bad luck and they express it, it can be much more helpful if others just acknowledge it, instead of trying to brush it away or minimise it.
Sometimes when people tell you they have a problem and it's unfixable, they're not asking you to fix it, just to acknowledge the challenge they face.
Just because someone expresses the unjustness of something, doesn't mean their mindset is wrong and they're not a positive person.
Obviously try and give the benefit of the doubt when you're reading fb/msgs etc as opposed to face to face, but also try and think about how your post might come across before you post.
Community is actually a thing and so is duty, and we should all do our bit where we can. If you're any kind of human being, it feels good to give back as long as you don't overdo it.