Linked In, the professional social network introduced the possibility of using applications. Just as facebook, myspace and friendster did.
Linked in feels the threat of Facebook, especially combined with applications such as Kuhnektid to increase your professional “visibility” across the work. Most of linked-in users, are on facebook too.
A set of examples are there in their application directory. Tools such as file sharing, project collaboration, or being notified when one of your “contacts” is in the same city as you are there. No sight of a SDK yet, and no superpokes either.
Let’s see how users adapt to this.