I think this is a pretty standardized thing, with a bunch of industries having something called (I think) NAICS codes. I think it would be great if we not only had all of those industries, plus their NAICS codes, but also had some description of what those codes are and why they're valuable.

The description of what they are should probably go in the Industry card itself.

I would imagine this could be 'special pasted' into Excel to make a csv for upload:

http://www.sec.gov/info/edgar/siccodes.htm

another potential source:

http://www.eeoc.gov/stats/jobpat/siccodes.html

maybe the best?

http://en.wikipedia.org/wiki/Standard_Industrial_Classification