This plugin enables your visitors to add a quick comment about your blog (as a whole) and the comment will appear in the sidebar immediately, without reloading the page.

sshot-2009-09-21-[2] As the comments are handled by WordPress, you have the normal comment moderation, spam protection and new comment notification.

Setting up was pretty straight forward, upload the unzipped plugin to /wp-content/plugin/ folder, activate the plugin then go to Settings > WP-Wall and set your options, add the widget to your sidebar. There will be a page created by WP-Wall plugin to contain the wall comments. If you do not wish for the page to appear in your Pages menu, set it to private and update the page.

Because the comments are controlled by WordPress, the comment RSS feed can be applied. Smilies, HTML codes and links can be inserted in the comments. The plugin is fully customizable with a CSS file and graphics is included.

You can download the plugin here.