The Digg Protector will determine if a visitor is from Digg, and if the visitor is indeed from Digg, the plugin will serve them a remotely-hosted version of the image. Otherwise, the plugin will serve the locally-hosted (on that server) image.

Digg this wordpress plugin is a plugin that detects incoming links from Digg.com to your wordpress post and automatically display a link back to the digg post, for people to digg your story. When a digg is first recognized an email is sent to the site’s admin The detection is based on the referrer URL, which has to come from digg. In case there is more than one digg posts to your page, only the first one will be displayed.

SocialList is a Wordpress plugin that adds a page to your admin area allowing you to view details on submissions of your pages to social bookmarking sites. Currently only del.icio.us and digg are supported.