On: See Wolfram Alpha in Action: Our Screenshots

[pixcavator]

You overlook the main difference: Alpha’s answers are structured. So, it may be possible to build something on top of it, once API is out.

[rythie → pixcavator]

I could see a lot of value in have a consistent interface and features (sortable columns, zoomable graphs, filters etc.) and reliable data sources.

Wikipedia articles are often condensed information that is on google, but the condensing it's self is useful.