Is there a link/plug in to show the all user's wall ?

Hi,
I found very interesting the user wall page into user profile, but is there the possibility to show in a page the wall (activity) of all users?
I mean, like facebook home.

Thank you

Facebook Home is no different than viewing the Activity tab of your own profile. It shows your activity, your connections activity, and the activity of anything you're following or a member of like GJ groups. Facebook does not have the functionality to show the activity of all profiles. CB Activity however does using its Recent Activity page. You can link to Recent Activity by creating a Joomla menu item with menutype Community Builder > Plugin then select CB Activity for Plugin. It should already be defaulted to Recent Activity as the Action otherwise select it.

So the normal Activity feed of my profile page already show all activities of my friends, groups and so on?
Perfect, I just need to know this!

So the normal Activity feed of my profile page already show all activities of my friends, groups and so on?

Yup

Another question, maybe resolvble with autoactions:

When an user go to the website address, he can see the index page, which actually contains only the top horizontal menu, the login/registration module and other 2 modules.

When the user log in into the website (or do registration), he is automatically send to his profile page. From template or any menu voice is not possible to go back to index page, as is intended, but if the user write again the main web address of the site.

The question is: how can I send automatically any user to his/her profile page if he/she is logged and write the website address into address bar of the browser?

In theory the index page of the website should be visible only to visitors not registered and go directly to the website address.

I recommend configuring the modules displayed on your home page to use Joomlas Guest ACL so they're only visible to users not logged in. Then set modules on the home page with Registered ACL so they only show to logged in users. Should basically give you 2 different home pages based off being logged in order. Beyond that you'll need to look into Joomla template menu assignment to have a different template layout entirely for Joomla based off where they are. None of this is has anything to do with CB though.