Concept Lens [flinklabs.com] is an online visualization that tracks the conversations occurring on Twitter and photos being posted on Flickr, for any event or topic of interest such as for conferences. Tweets are mapped on a virtual timeline, while users can add "Concept Lenses" to discover more detailed information for a specific time span (i.e. keywords or URL), adjust the time, or explore meaningful connections between related tweets.

Using Concept Lens, conference attendees are able to follow the conversations and track connections occurring in the "back channel" while the conference is in progress, and organizers and presenters can publish "notices" that will appear in the visualisation highlighting useful resources and housekeeping information.