Since we all just had a good time talking about what NOT to do on LinkedIn I thought I'd post some things you SHOULD do. LinkedIn, according to Mashable just surpassed 50 million users. Although it's clearly not the sexiest of social networks (the media loves them some Facebook and Twitter) LinkedIn is incredibly valuable, especially for the B2B set. You can definitely market your business but remember - you're building relationships one to one. That means there are no shortcuts.
These are things that are working for me but I would love to hear any cool ways you're using LinkedIn successfully. Remember, there are no experts in social media just the intellectual capital of the collective. (Seriously I just made that up )