Tafiti means "do research" in Swahili and it is an experimental search front-end designed to help people use the web for research projects which span multiple search queries and sessions by helping visualise, store and share research results.
Check it out, it's pretty cool - www.tafiti.com
In particular try -
- Shelf on right to drag interesting results which then can be saved and shared.
- Carousel at the bottom left to target search by image, blog, etc.
- Click Tree View (Top centre) for cool visualization of result tree