Sharers parameter in Google Reader API

I´m wondering, what sharers= parameter mean in Google Reader API during broadcast-friends query and how to work with it's value.

I'm asking this way:

http://www.google.com/reader/api/0/stream/contents/user/-/state/com.google/broadcast-friends?sharers=CJymtOj0ChD5ieeTgAgQp7Wp9LYN

Getting this:

http://pastebin.com/NLE7WHEm

I'll be grateful for any he开发者_如何学Golp.