For a job seeker, this means contacting your network on a regular basis to stay on their radar.

FORBES: Would You Hire Yourself?

It has apparently caused batteries on some iPhones to drain rapidly by repeatedly contacting the mobile network.

BBC: Apple on update issue - no comment

There is value in being able to search for friends of friends who work at a company where you are gunning for a job, but while blindly contacting someone you've never met on LinkedIn is expected, it may be uncomfortable on a network of friends.

CNN: Review: Facebook's Graph Search is not very useful