Select the three simple networks:
(Remember that directed graphs can be simple!)
Consider the following network:
The social network Bleeter allows people to share content (in the form of "Bleets") online.
Before anyone can share anything, two people must first make a connection - one person "follows" the other.
Whenever a person creates a Bleet, it is shared with everyone who follows them. These people are called "followers".
Consider the following diagram.