(Charging for listings between direct friends would have limited reach and could be risky, since the site benefits from offering some services at no cost).
For the direct friend-to-friend communications, friend lists allow for appropriate targeting, therefore making more high bandwidth channels acceptable.
Specifically, there are two main types of communication on Facebook: direct friend-to-friend, and feed posts.
Direct friends are closest, then their friends, etc.
We have considered three types of relationships including direct friends, indirect friends (friends-of-friends) and non-friends.
We have assumed that a pair of direct friends or friends-of-friends who have mutual trust with each other can communicate.
As illustrated in Figure 3, the nodes can start establish mutual relation in office and can be later direct friends using Facebook, Twitter, Google+, LinkedIn, etc.
Only a child's direct friends can view his or her profile, and parents are alerted whenever a new friend is added.
All of that sharing can make them vulnerable to people in their community who may be bullies, and to people who are not direct friends, who might have bad intentions.
And unlike communication and payment tools of the past, we provide a means for the rapid (dare I say viral?) spread of the nonprofits message well beyond their direct friends and followers.
Direct friends to your personalized URL.
