Michael,
There's multiple things you can do. You can use our profile integration to import a user's LinkedIn information into Community Builder, JomSocial, Kunena, or other extensions that have profiles. That's how you can display a profile easily, without having to create it yourself.
Additionally, we support the "Member Info" and "Company" widgets, which can display LinkedIn user's info around your site if you want. A good example of this is at the bottom of a Joomla or K2 article as an "About the Author" type thing which will show their LinkedIn info.
Hope that explains a little, but if you have more questions, just let us know.
Thanks,
Alex