There are two main tabs: "By me," which is where you display your blog; or "My contacts," which shows the blogs of your connections. If you don't have a blog, the "by me" tab will simply be left empty.

The Wordpress blog app for LinkedIn, on the other hand, only works to share Wordpress-based blogs.

We recommend installing either of these blogging apps only if you yourself enjoy blogging. While Blog Link can be useful without a blog, you can easily get a feed of your favorite blogs via RSS, making a blogging app largely unnecessary.

Huddle

Huddle allows you to upload any kind of file to the Huddle Widget box on your LinkedIn profile (provided you've installed the app). You can upload files up to 10 MB in size (beyond that, you need a Huddle.net account).