Who's taking part in social networking? It's not who you think.

If you think social networking is just for twenty somethings, think again. A new study shows an astonishing increase in participation of online social networking among the affluent, according to the Luxury Institute. 30% of Facebook users come from household incomes of at least $100,000, and 22% of MySpace users come from similarly affluent households.

If you're marketing a luxury brand to consumers, does your strategy addresses this important movement? Are you taking steps to understand how this audience uses social networking, and how best to engage them?