What do  100 million people know? They know that LinkedIn is the center of your professional digital web presence. And they aren't there to play FarmVille.

In celebration of LI crossing the 100 million mark just this week, I wanted to share with you 5 wonderful features on this robust tool that you might not know about:

Get a Custom URL

Your name is your digital real estate. Claim it anywhere you can. You can place this on your business card, Facebook profile, email signature and more. It's easier to type and remember than the default URL they give you with all the alpha numeric keys. If you have a common name, this feature is especially useful. This enhances your personal brand and is beneficial from a search engine optimization standpoint.

Maximize Your Groups
Everyone knows about groups but do you know that the  conversations are searchable by Google? If you are discussing a hot topic in your field or are demonstrating your expertise on a subject, that conversation can and will be picked up by search engines. Others that are searching for that information may very well find your thought out response in their search results. Participate and spell check!

Company Profile
You can now have a company profile on LinkedIn, much like Facebook Pages. List your services, employees, job openings, standard information (includes a map), keywords and get your company "face" out there! See this great article about how to "Defy Gravity with Your LinkedIn Company Profile" by Viveka Von Rosen, my go to LinkedIn Expert. In fact her Twitter handle is @LinkedInExpert. 

But wait, there are 2 more!  

To read the article in it's entirety, click here  .