as used on facebook

Everything is on the home page:
- In the bottom right, notifications appear in a red box with a shtick in; means that someone wrote on the wall or interacted with you somehow. If the square is not listed, no intaractuó with you so far.

- Up to half says "Inbox" or "posts" there are private messages that you send to other users (a diferncias the "wall", these messages are only you and you write)

- In the top right are the applications, whether friendship, for you to join groups and fan pages, to invite you to play mini-games or to send you updates fans groups.


facebook profits are
1. chat
2. video call
3. comrtir what you like best
4. counicador news
5. expand a brand, group events e.t.c