I am always looking for an alternative to using dropbox with google docs with basecamp - for example. This service looks interesting and I may try it out as an alternative.
There is mention of another Mindjet product from a few years back already mentioned here but I thought I would at this. They have really done a lot with this and it is great for people that are visual thinkers.
I am reading the book written by the founder of this group. It is an enjoyable read and this company also runs a helpful blog. I think it is great for people and organizations that feel challenged by having those difficult conversations.