Important: your Profile
It's so important to create an information-rich profile that I'll borrow an excellent piece of advice from a fellow blogger:
Create a user-friendly profile. Your LinkedIn profile is your virtual business card. Make sure that it represents you the way you want to be viewed by strangers - make that ‘people you haven’t been introduced to, yet.’ A sketchy LinkedIn profile signals that your busy day doesn’t allow you to fill in trivial details like what you’re doing now, what you’ve done in the past, or any other useful information. Such an incomplete profile won’t serve you as you network on LinkedIn, but it’s impolite as well: its message is “I’m going to use this database to find people, but I won’t bother to include enough information about myself to indicate how I might assist anyone else.” Take a few moments to fill in the gaps.