The message was certainly not an advertisement. It's simply a listing of tech meet-ups in Bangkok for this week, which I felt would be nice for other BKK techies to attended. I could see where the top portion, which is the recruitment part could be construed as advertisement. 
I felt that this is exactly what Barcamp is about, ad-hoc meetup and the spreading of knowledge and information freely.  It takes everyone to openly help the Thailand Startup & Tech community grow, it was in this motivation that I sent the message. 
I also seen that the "Reading Room" sent out a message 2 weeks ago, which was certainly not tech related, with no repercussions. 
Shall I not send this to the group again?  
Kelly M. Kampen