Mentionmap [asterisq.com] is an inspiring network visualization that allows for the exploration of one's Twitter network. Users can discover which people interact the most, what they are actually talking about, and what people are relevant to follow on Twitter.
Mentionmap loads each user's Twitter collection of recent status updates (or tweets) and parses the names of people and hashtags they talked about the most. Mentions are represented as linear connections, and discussions between multiple users emerge as clusters. Selecting a user will display their network of mentions as well as further details gathered from their profile. The lines between nodes can be hovered for details, and are drawn thicker if the users talked about each other more often. The keywords in the blue bar on the top of the page allows for the retracing of user interactions.