They are all vital contacts who can serve as references, recommend you for a job, and alert you to positions at other companies.

FORBES

Detective Chief Inspector Norman McKinlay retired the following year, but one of his last decisions in the job was to recommend a review of the Sweeney case.

BBC: Killer planted clues in misogynistic artworks

Its job is to recommend a single proportional alternative to Britain's current first-past-the-post electoral system, with voters asked to choose in a referendum between that alternative and the status quo.

ECONOMIST: Politics

As scrupulous a job as Cameron has done, I can't really say that I recommend "Titanic 3D" in order to experience this landmark movie with an added dimension.

CNN: Review: 'Titanic 3D' is a work of art

The companies selling these applications recommend that users create virtual groups so employees can follow a specific topic, branch of the company or type of job.

WSJ: The Business World Welcomes Social Networking