I've always had trouble referring people to my LinkedIn profile because (1) the URL is ugly, and (2) viewing requires registration.
Good to see LinkedIn finally catch up to the rest of the social networking space, and introduce public profiles with intuitive URLs. Here's mine: linkedin.com/in/mikeabundo. Apparently, LinkedIn's monetizing the public profiles with AdSense.
Now, if only they'd let members do the full monty and show everything in their public profiles. It would certainly provide more context (and therefore, more clickthroughs) for the AdSense ads.