I found more blogs; might be useful for your presentations.

http://conformityisdead.blogspot.com/

http://commentarysingapore.blogspot.com/

http://paptalk.blogspot.com/

http://sgrally.blogspot.com/

The writing is often very opinionated: please examine and evaluate each article or post for soundness of argument and veracity of fact, before forming your own judgement. Be especially aware of logical fallacies, and in general weakness in logic.