have to login and create a profile?

Rob,
Unfortunately, LinkedIn has no method to retrieve a user's email address. Because of that, the user needs to fill out an abbreviated registration form so that the proper Joomla user can be created.

Even though there is a registration process on your site as well, their LinkedIn avatar and profile information can be imported for the user, which can skip a lot of form-filling, depending on how your site is configured.

We've helped a few users switch the registration side of that page you reference around so that all that is there is an email field. It's pretty easy to hide the name field, as that's imported from LinkedIn. Additionally, the username and password fields can be setup to automatically generate values. That makes the registration process on your site as minimal as possible, while getting the one bit of information actually required, the email address. If you'd like help in doing that, let us know. We'll also be implementing options to hide those fields in an upcoming release.

If the mini-registration is a deal-breaker for you, no problem. We have a 30-day money back guarantee for just these reasons.

Hope that helps explain,
Alex

Rob,
For the other extension you were using, you would have had to authenticate the LinkedIn app at some point with your LinkedIn. Then, the extension you were using sounds like it simply asked for the user's email address to create the account locally. That's what I was recommending with the changes we can help with above... hide all the other fields on the Login or Register page, except email (since we need that).

For editing all the text, it's pretty easy. All of that should be contained in the JLinked language file at /languages/en_GB/en_GB.com_jlinked.ini. If you want to hide the left hand side of the form, we can even help with that

Let me know if that helps explain or not. If you need more info though, we're here to help!
Alex

Glad to hear you're good to go!

Good luck,
Alex