Business for social media?

Jeff Tippett had a post at SMT asking his network if they used soical media for business use:

I sent this question out to 30 or so fans of mine in Stumble Upon. The results were mixed and truly speak of where I believe social media currently is in business applications. Here are the results:

1. Most people that I surveyed are using social media sites merely for personal reasons.

2. A few are starting to ask how their “fun” experience on social sites could translate into business.

3. A minority have discovered ways of using social media in their businesses.

How do you use social media?