59% have won customers or done business as a direct result of online networking sites.

Furthermore, as business networking (the survey definitely shows a divide between “social” networking such as Facebook and “business” networking such as LinkedIn) shows significant ROI, the love is returned:

78% are open to purchasing from contacts made on such sites

While these results are from a survey conducted in the UK, I’m going to say that empirically they are valid for the business environment on this side of the pond.  For those of you who are skeptical of the power of social networking, some powerful numbers are starting to make a pretty strong case, all the more so when you can start measuring the result.  It’s one thing to engage in social networking on a gut call, it’s another to get measurable returns that justify the investment.