It's an interesting piece of software. I look at massive amounts of data all day and I'm constantly trying to glean out features of the dataset. Having a visual tool that can instantly represent the dataset in various forms would be indispensable. Right now I have to do a lot of custom visualization work in Matlab, which is great on a case by case basis. I would deeply consider something like Pivot if it can generalize whatever I'm throwing at it. But my two main concerns:

1) This being a MS technology, is it going to have the unnecessary overhead like other MS products (Excel, Vista, etc)

2) Are these "collections" free? Can we import our own? It seems like if the data was already pre-processed, then that wouldn't be the case.