How is a business's social responsibility measured?

Since this is not my area of expertise, I searched Google under the key words "'social responsibility' business measure" to get these possible sources:

http://www.mhcinternational.com/measurement.htm
http://www.business-ethics.com/100best.htm
http://en.wikipedia.org/wiki/Corporate_social_responsibility
http://66.102.7.104/search?q=cache:yebWIt3X-8UJ:www.corporate-citizenship.co.uk/publications/download2.doc+%22social+responsibility%22+business+measure&hl=en&gl=us&ct=clnk&cd=8&client=safari
(Broken Link Removed)

I hope this helps. Thanks for asking.