MindMap WebApp: Bubbl.us

From LifeHack's 11 Top New Web Apps of 2007:

bubbl.us: Flash-based mindmap creator bubbl.us allows you to quickly and easily make effective, attractive mindmaps that can be exported as images or as HTML outlines, or shared with others who can add new items or draw new connections between existing ones. Sometimes clunky if your connection is slow or if the mindmaps get too large. But a fantastic Flash-enabled tool!