Live Comment Preview
Live Comment Preview is the simplest way to get live comment previews on your site.
Live Comment Preview is not a necessary plugin for your blog, but it is definitely one which enhances your user experience a great deal.
It performs the simple job of displaying a preview while the commenter is typing the comment. It thus provides a simple method for the user to check how his comment will appear on your blog.
The installation of the plugin is extremely easy; all you have to do is upload the plugin and activate it. You may need to manually add code to your theme file, if it lacks the necessary code.
However, the true power of the plugin is released if you customize its output to display exactly as the comment would appear on the blog. This will require you to add some CSS to your style.css. You can go one step further as to decide what exactly displays to the visitor.
The only caveat is a slight slowdown in loading time. Additionally, it can cause a minor flickering on the screen as the user types his/her comments out.
Will end this review with a small tip. Add the code manually, just before the
textarea (the box in which the comment is typed out) of your comment. This ensures that the commenter will see the comment as he/she is typing it out. Placing it below the textarea or the submit button has a greater chance of the live preview not being visible.