You must have observed various websites displaying a two columned comment form, as that looks more symmetrical on some websites. Now you can easily customize the default WordPress comment form and make it something other than default.
Advanced Comment Form provides you some easy features for editing the default WordPress comment form layout and fields etc.
Start by installing and activating it on your WordPress site. Upon activation visit your admin area dashboard Comments -> Comments Form page and choose your hacks.
You can enable a two columned layout simply by ticking the ‘two column layout‘ option on its admin page.
Other options allows you to remove URL field, email field, you can add some message text above & below your comment form and encourage visitors to comment on your website.