Perhaps he's trying to sell us "indifference".
In a way it's a message that we have all become too indifferent to the troubles and tribulations of life.
That we just wonder through life without really caring or even wanting to care.
This lad could be selling us indifference and we would gladly buy it. Well, not gladly since we're indifferent.
"It's good to be back" is clearly a cry for help. He wants to care but can not.
We must show him the light! We must say "No! I will not buy your indifference!".
This may be the only way to set this poor lad free of the terror that is selling indifference.
Now then, do we have to wait for him to actually post spam, or can we just ban him now?