Linkbuildr for WordPress - Automated content promotion for Wordpress
Linkbuildr is a free Wordpress plug-in that takes the pain out of promoting your content. Simply write your post, fill in some contact details and hit publish - Linkbuildr does the rest.
WonderSearch - A free keyword tool that uses Google's data relationships
WonderSearch is a free keyword tool that automatically uses Google's data relationships (people also ask, people also search for, and related queries) to find semantically related keywords.