I'll be teaching search engine marketing, seo copywriting, and search engine optimization 101 training for a public relations and web development firm this April 13 and 14.
This activity was made possible thanks to Facebook. I often use my status updates to alert friends of the activity I was doing or preparing for.
At that time, shared about an seo copywriting briefing I was doing then via status update. Shortly thereafter, a contact was already asking for a meeting on how this can be done for their own company. We met, exchange further e-mail via Facebook, and the training was set.
With a clear purpose in mind, a Facebook or any other social networking account can be a powerful marketing tool. Use it wisely and don't abuse it!