In this case we knew each other in person. A mutual friend posted about it on facebook.
Aww man. I am so sorry 
No freaking way! Way too young to pass. What horrible news.
my thoughts go out to his friends and family
What a shock! I’m so sorry to hear this. My prayers go out to his friends and family.
Ugh, what a bummer. Thoughts and prayers go to his family and friends.
Sending out supporting thoughts to his family and loved ones.
This is such a shock, and news I’m sorry to hear. My thoughts are with his family.
Sympathy goes out to his family and friends. So young to pass.
Please let this be a false alarm. Damn.
He was one of the good 'uns.
Holy shit. That is way too young. I’ll have his family and friends in my thoughts.
Terrible, terrible news. I’m so sorry for his family and friends.
Damn. That’s awful. I remember reading his posts just the other day, seems unreal.
Awful news. tdn, please pass the Dope’s condolences to his parents. Let them know he was valued and will be missed.
StG
So sorry.
I met him at a Dopefest in Boston about four years ago, and liked him a lot. I am very sorry to hear this.
Oh, please let this not be true. He always cracked me up and seemed like such a good guy. I’m hoping his friend was trying to get one over on him.
I just buried a friend of 15 years today.
Please let this be a false alarm!