You may leave comments under any article/post. I would prefer that all comments are completely visible so you may exchange information freely with each other. I have created another blog that allows all comments to be viewed and exchanged in much the same way as twitter (without the character limits). I will be in the process of migrating articles over to the new blog. I will maintain this blog as more of a reference. I would hope that you would register to receive automatic updates of comments.
If you have specific questions please foward them to;