I wrote a very small addition to WordPress 1.2 which lets you have comment previews. The install is very simple and it helps in a couple of ways:
- Lets your commenters know what their final comment is going to look like
- Might prevent comment spammers
Example here: http://proc.homeip.net/testwp
Download here: http://weblogtoolscollection.com/b2-img/wp-comment-preview.zip
Please post bugs/suggestions.