So stop saying it, please.
Your social media strategy is not to start using Flickr and Facebook to spread your message, okay?
First, a tactic is not a strategy.
Social media strategy is about figuring out, first of all, why people should care. It's what Mark Earls calls the "What For?" of a business:
"Put really simply, the Purpose-Idea is the "What For?" of a business, or any kind of community. What exists to change (or protect) in the world, why employees get out of bed in the morning, what difference the business seeks to make on behalf of customers and employees and everyone else? BTW this is not "mission, vision, values" territory - it's about real drives, passions and beliefs. The stuff that men in suits tend to get embarrassed about because it's personal. But it's the stuff that makes the difference between success and failure, because this kind of stuff brings folk together in all aspects of human life." - gapingvoid.comSo that's how a strategy begins. Now, if you can understand that, and still think that executing a strategy just has to be about using social or peer networks, you've still got a problem.
In the phrase Social Media, "social" is the keyword.
The media is interchangeable.
Social media can take place on the good old sneakernet.
The reason that social networks are used in social media is because they enable people to connect to so many people so quickly. But it's their usefulness that makes them so widely used for social media campaigns, not because the terminology or strategy necessarily demands it.
So please, stop writing what you think is your "social media strategy" by starting off with a list of websites you need to post your content on, as if the media will create the society. It won't.
Communities create networks, not the other way around.