These leeches network and grapevine like you wouldn’t believe in your wildest dreams.
I know; I have coworkers who wouldn’t qualify for any freebies who know where to collect free turkeys/hams for the holidays and such; some managers have asked leeches from other departments to stop showing up and taking all of the donuts and such that the manager has brought in specifically for his/her staff.
I believe it. Just look at how they organize mayhem and post their exploits on YouTube and other social media. They have the smartphones and use them diligently.