If you’ve been checking your emails over the past few weeks, chances are you’ve seen a bunch from Linked In with these messages from your connections endorsing you. When I first saw these I actually didn’t pay it much attention because it didn’t really seem official. I’ve had recommendations written for me, and those I take quite seriously. However an endorsement didn’t ring a bell. After about seven more endorsements from various people who normally aren’t frequent on Linked In, I had a newly sparked interest to find out what this was all about.
First lets take this back to the addition of skills that you can now add to your profile. The skills can be just about anything like web design, graphics, SEO, HR, filing, management, etc. If you haven’t yet, go through your profile and add all the skills that pertain to your work history and expertise. 
Once you’ve selected all of your skills, you’ll have a list of them towards the end of your profile page. This is now also public so people who are connected to you to be able to click small plus buttons to endorse you for those selected skills.
So now what does all this mean? Well for now it’s kind of like a public notoriety display. It may be that people don’t take the time to write out recommendations for their connections, or Linked In figured they’d create something much faster for user engagement similar to the Google Plus 1 (+1) button. However you feel about it, I suggest you start listing all of your skills, and ask for others to start endorsing you. Before long you’ll have multiple endorsements that you’ll be proud to show a prospective client or HR manager.
