Most people are probably familiar with LinkedIn as a service only visited in times of desperation—after being laid off, maybe, or after a day in the office so bad that I am just not going to take it anymore. The LinkedIn app aims, however, to be a companion to the LinkedIn web service that I check every day. Sure, there’s the all-important profile pages showing off my work experience, and the handy tools for networking, but the service now includes visitor metrics and a newsfeed for a decidedly more social feel. It’s sometimes the easiest way to reach out and make a business connection. It’s like Facebook for grown-ups.