LinkedIn Users Come for Solutions There is a reason LinkedIn is fetching about 30-50 times the CPM of other social sites, like Facebook and MySpace.
LinkedIn users join and connect to do deals and buy big solutions.
LinkedIn users are not chatting up their lost classmates or buying ringtones.
They want to know how to get the best talent, put together partnerships, and get solutions to market changing problems.
Entering the community on LinkedIn is a bit more onerous than your average social networking.
While engaging in clever conversation and keyword laden chatter can get you followed by hundreds on Twitter, LinkedIn generally requires substance.
Referrals and Information Rules Value as a connection on LinkedIn's social site is powered by two principles--people and information.
Making social marketing work on LinkedIn means accumulating links with the right people, acting as an effective referral broker, and seeding credibility into your network.
If you do not already have a core group of connections here is a 5 step LinkedIn marketing strategy:

1. Start with contacts to build from a core group of relationships.
   
2. Add LinkedIn profile to email signature.
   Not just Outlook, or other email clients, consider your website, or newsletters where you feature staff from your company.
   
3. Engage other networks to build LinkedIn connections
4. Join LinkedIn groups to build an audience
5. Participate in LinkedIn Answers to demonstrate expertise

Reinforce Your Advertising Now that you have connections your LinkedIn marketing strategy will be far more effective and credible.
LinkedIn's ad network can help you to drive the traffic and your profile, exuding expertise and credibility, will help you close the deals.