Social Media is NOT about technology or Web 2.0 applications. Social Media is Word-of-Mouth or Community Based Marketing that leverages technology to enable conversation.I couldn't agree more. So many of my non-profits clients shy away from my recommendation to use social media tools (a.k.a. "social networking tools") to communicate with their constituents because they're afraid of new technology.
As Erica's definition above confirms - it's not about the technology. It's about the conversation. When the technology can make the conversation easier to have - and allows more people to be involved in it - then it's the best tool for the job.