WordPress MU

Is it possible to have a link in the home page to have the users list and choose the user blog you want to read?
I think this will be very useful in a community in which every user has his own blog and visitors or other users want to read the blog of a specific user.
Excuse me for my bad English.

i think that you are searching for list-all plug-in :
http://wpmudevorg.wordpress.com/project/List-All
maybe its what you are looking for

Do remember that that plugin skips those who have choosen to not have their blogs made public.

I've added a comment to the many comments on the plugin page. Really this fact belongs in the description but I can see no way of editing that.