The activity for Day 9 of the Comment Challenge is to consider whether we should be building conversations through comments or blog posts.
Sameer Vasta does not allow comments on his blog because he would rather communicate via blogs ie he writes a post and I reply via my post and so on. But I know I have regular readers and commenters who do not have blogs and have no intention of doing so. Restricting comments would prevent them from commenting and contributing to conversation.
As for me, I couldn't possibly write a post every time I feel the urge to comment. I usually find that if I do not comment in response to a post there and then, I never come back to the conversation in my own blog.
On the other hand
Recently someone made a comment on a post I wrote and I started to write a long reply but decided to make it a blog post instead. But I felt weird doing it - it was like I was 'picking' on the commenter. I still feel a tad uncomfortable about that.
In the meantime, I have also recently had people comment on my blog and leading the conversation off in a direction I did not want to follow at all. So if that continues, I will choose to prevent further comments on that particular post.
Long and short
So whilst I understand the view of bloggers like Sameer, it is not the way I wish to operate as blogger or commenter, so choose to continue keeping comments open on my blog.