Do you comment when you visit other blogs that are having the same area of interest as yours? If your answer is no, then I strongly suggest you to change your practice. It is beneficial to both yourself and the blog your commenting in.
A blog writer’s satisfaction lies in the number of comments he receives [...]

Here is a useful firefox extension for those webmasters who are frequent commentators to the blogs which they visit.
Install the Pre-fill comments Greasemonkey script which will help you to do the stuff. This will enable you to automatically add the username, email address and website url fields in the comments section. After installing [...]