How can I run a successful social media campaign?

[HamyBoy]

That's the golden nugget question...

To start, it's good to develop a social media marketing strategy prior to conducting your plan.
It should include the social mediums you plan to use (Facebook, Twitter, LinkedIn, etc.), your goals (such as more visitors, revenue, etc.), your "call-to-action" strategy such as a promotion, develop and maintain a blog - anything that can create viral content to be shared across the web and your social channels.

In addition to the above steps, it's also wise to add your social network icons to your email signature, Facebook fan page, and website.

There's also companies out there that do all of this (and more) for you. Such as http://www.socialbungy.com for example.