Whether anger takes place on a forum, in a room or an oudoor event: it seems to me the best way to deal with it is to give it time out unless there appears an immediate solution at hand. Because people that are angry usually are picking to start a fight and to draw those around them into their anger. Usually no one wins these fights and everyone looses.
Anger creates fire in the atmosphere.

The vibrations are so anti-spiritual that it takes quite a while to reestablish a peaceful environment. For those sensitive to vibrations it is like a lightning bolt striking into your being. Avoid angry people and situations. If you are fortunate to see anger developing, change the subject if this does not work-leave. Come back another time if you care about the person enough to do so. Let them know-not through confrontation-that you do not want to be a part of their anger.
We have a spiritual immune system. Gathering peace in our pail of meditation helps us be immune from the fall of anger. To never practice peace and meditattion is to be opened up to evil forces that slip into our consciosness and manifest as angry spirits.
Like a drug; anger may show somethings about your hidden supressions.Yet it is like taking a plant and pulling it from its roots. You 'see' the roots but the plant looses its divine expression. It becomes lifeless.
Anger arises from thwarted desire.