eMarketer took a look at this July 2010 survey and they made this easy to read chart that you see here on the right.
As you can see, less than half of the respondents expected to see a short-term or long-term increase in sales due to social media. I’m sure they’d be happy to see that gain, but I expect the response was more about the reality not the hope.
The reality is that we don’t really know what kind of impact social media can have on brands because there just isn’t enough data. Many companies have tried to qualify the ROI per Facebook fan or Twitter follower, but the truth is we don’t have a solid way of quantifying social media behavior.