Why is this being upvoted? There is nothing new about being able to share Amazon Prime benefits.<p>And here I was hoping it was an annoucement that you would henceforth be able to share your Kindle lending library benefits. That's my biggest annoyance, since I'm not the one in the household who has a Kindle.
They've had this since the beginning of Prime in 2005. 4 members of your household <i>or</i> 4 coworkers basically means anyone you want, regardless of if they have the same address as you.
Once I actually got to the form for sharing Prime benefits, I noticed that it doesn't actually include co-workers. The options for "relationship to primary member" only include family relationships like "spouse", "unmarried partner", "parent", "child", etc.