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 the script, press Shift+Alt+c and you will be asked for the username, email and url details. The next time you need to comment on a blog, all you need to do is press Alt+c and the details get filled in automatically. All you need to do is write a comment in the text box. Changes to the values can be done anytime by pressing Shift+Alt+c anytime. This is designed especially for wordpress blogs. But you could try this on other blogs which have similar fields to be filled in comments section.

Hope you install this addon and use it for commenting here in Q4News regularly. LOL