i agree with threadstarter. 
As everyone can see, online forum is platform where ideas and words
are harder to be misintepreted than in real live. It's as real,
concise and clear as CCTV. There's neither underlying meaning,
catch, nor ambiguous content whatsoever.
I have decided to tell my boss that if he wants to talk to me from
today onwards, he can only communicate with me on sgforums. I might
consider helping him to register an account/sign up pm if he ask
politely via email. 