I always review the LinkedIn profile of people I am meeting / networking with, doing business with, etc. The things I look for are a sense of who is working at the company, do they have good recommendations, do they have a trustworthy background, etc. In other words a LinkedIn profile can be a great way for me to determine how well I "trust" the person I am dealing with.
Conversely, your LinkedIn profile gives YOU a great opportunity to try and build trust quickly with the people that want to do business with YOU!
So here are my recommendations for optimizing your LinkedIn profile:
1. Have everyone in your company create a profile and link them to the company.
2. Solicit recommendations from all your clients from within LinkedIn
3. Make sure your title accurate and "client friendly"
4. Always use a professional photo of a person, NOT a logo!