AHA Paradigm Project - The AHA (Advanced Human All) is a mainly internet based community of scientists and researchers of all disciplines that work on a new synthetic paradigm as a foundation of future science, future communication and future community.
Apocalyptic Dreaming - Interactive forum for thoughts, visions, and fears of the apocalypse.
Boldly Go! - The blog exploring the possibilities the future will provide in science, technology ans society.
Flickr: Robots: Technology Pop Culture - Share and discuss the latest tech news (gadgets, robotics, cyborging, futurism) or geek out on robots in pop culture media (film, anime, manga, comics).
FutureFeature - Discuss what the future should bring.
Immortality Institute - Dedicated to education regarding the prospect of indefinite life extension technologies. Offers forum, chat, frequently asked questions, and articles of interest.
What's Our Future - Forum established to discuss what our future will be like in several different areas, such as technology, computer, economy, politics, war, and sociology.
World Scenarios - A community to discuss and vote for plausible humankind future scenarios. Features polls.