Striptease Marketing

A friend who has some traditional marketing background asked me to explain to her how social media marketing is different. While I was giving the usual talk about conversation, participation, and involvement, I realized that SMM is very similar to striptease because the purpose of both is to give a “preview” of skills & abilities in order to produce a paying customer:

• Exotic dancers prove their abilities with teasing and seducing, while the conversation in SMM is there to establish the subject expertise.
• Strip club patrons order private dances from the performers they like, and the end result of a good blog/promo/conversation is the purchase of a product/service offered.
• Both require a relatively cheap though time consuming exposure to the public in order to make a sale.

I think this is the easiest way to explain what social media marketing is all about besides the conversation. Is there?