I don't see WA as a Wikipedia killer. It's more like a working version of Wikipedia articles: read about a concept on Wikipedia, then try it out in practice using WA. I think they complement each other very nicely!
UPDATE: threw together a simple mock-up of what WoframAlpha inside Wikipedia might look like: http://bit.ly/3PHMD
The content and position of a WolframAlpha block would be selected by article authors. Considering how much space it eats up, it probably wouldn't be expanded by default, but it certainly needs to appear inline. If there was just a link to this simulation in the footer section it would be almost invisible.
Also, another shameless act of self-promotion: http://bit.ly/FT0qj (full blog post)
The content and position of a WolframAlpha block would be selected by article authors. Considering how much space it eats up, it probably wouldn't be expanded by default, but it certainly needs to appear inline. If there was just a link to this simulation in the footer section it would be almost invisible.
Also, another shameless act of self-promotion: http://bit.ly/FT0qj (full blog post)