On reading the art of guest blogging by Lorelle where she underlines the importance of guest blogging because it helps us improve our writing, I realised the same was true of commenting. Writing on our own blog might make us a little lazy and less careful about the quality of what we write, when it comes to commenting on other blogs, we know being lazy amounts to putting our image at stake.
There are a number of reasons why we tend to be (or need to be) better commenters than posters.