LinkedIn Status Update and LinkedIn Authentication are part of the LinkedIn Integration module.

Let users update their LinkedIn Status when creating/updating content or leaving comments.

Installation/ Initial setup

See http://drupal.org/node/919412.

Configuration/Usage

After enabling the module, go to admin/settings/linkedin. You can enable/disable Status Update availability per content type, for comments (and event sign-ups if you use the module.)
For each, you can also specify a default message that will be posted (and use placeholders for node title, url)
Don't forget to set the permissions for users accordingly.
Users have to link their LinkedIn account to their local Drupal account from their preferences at user/%user/edit/linkedin.
Beware, text is limited to 140 characters

Let users login to a Drupal site using their LinkedIn account.

Installation/ Initial setup

See http://drupal.org/node/919412.

Configuration/Usage

After enabling the module, go to admin/settings/linkedin. You can display the "Login with LinkedIn" link under the standard login form page, under the standard login form block, or as a stand-alone block. Note that if you choose the stand-alone block, you still got to enable it at admin/build/block.
Users have to link their LinkedIn account to their local Drupal account from their preferences at user/%user/edit/linkedin. If a visitor click on the link without having tied the two accounts together, he will be asked to either login or register as new user and redirected accordingly.

Theming

It provides the following theme function for the "Login with LinkedIn" link :

theme_linkedin_auth_display_login_block_button($display = NULL, $path = 'linkedin/login/0', $text = 'Log in using LinkedIn')

$display will be either 'drupal_login_page' 'drupal_login_block' 'linkedin_login_block', respectively for standard login form page, standard login form block, and stand-alone block.