OK, here is my personnal opinion about ROI calculation for Social Media campaign at the moment. It’s bullshit.

Since there is no industry standard, since nobody is able to clearly draw real and quatitative financial benefits from action about brand images and influence, it’s just useless. Yet, this is a question that keep asking our clients at the moment, and no doubt that we’ll have to deal with it pretty soon. The people of mashable have been discussing their own version. Seems like a good starting point if you have to go into that kind of conversations. Enjoy the ride.

First the bad news: If you’re going to calculate the ROI of your social media campaign, you’re going to have to know math. That may come as a disappointment to people who thought social media was only about accumulating Twitter followers or monitoring Facebook “Likes,” but it’s true. The future of social media is about math, metrics and monetization.

via HOW TO: Calculate the ROI of Your Social Media Campaign.