@edgarblythe,
No Edgar. It is because I express my opinion that you disagree with.
My response to your post was me expressing my opinion. It was addressed to people who want to have a discussion on the topic. You were free to ignore it (if my opinion didn't interest you), or to engage me, or to question my opinion, or anything else.
But you don't have the right to shut out opinions or to prevent other people from expressing them. This really is the problem.
You seem to be confusing Able2Know, an open forum where any member is free to express his or her opinion, with Facebook where you can restrict your discussion to a group of friends who agree with you. The strength of Able2know is the freedom of expression... that anyone has the ability to express their opinion without anyone (even the person who started the thread) has the ability to restrict an opinion.
This is true even on threads you start. The technology here doesn't assign "ownership". As soon as you post the thread... anyone is permitted to respond with their own opinions on the topic. You started a thread on herbal supplements. I responded with an opinion on herbal supplements. I am sorry, but that is the way it works here.
I express my opinion. I don't make personal attacks, but I am going to say what I believe on a topic and I am happy to defend it, or discuss it, or answer questions on it.
You are free to ignore any of this. But you are not free to shut people down or prevent them from expressing their opinions.