LinkedIn announced the end for its iPhone app, LinkedIn Intro, even though the app was only around for a few months. Intro launched in October 2013, and it input LinkedIn contact information onto iPhone Mail. Intro was a cleverly designed app, but it was also critiqued for being invasive, which may be why LinkedIn is sending it out to pasture. The professional social network put a more positive spin on things: according to LinkedIn, Intro is retiring so the company can focus on other projects.