BuddyPress.org

So, you mean something similar to the new Facebook “like” and “comment” features, borrowed from FriendFeed?

I agree that this would encourage more activity within the site.

As a first step towards this sort of interaction, however, I would like to see a way to become a “fan” (not friend) of a particular blogger within the site i.e. indicate your liking for a person’s entire output, rather than just individual items.

The Fans concept is discussed here: https://buddypress.org/forums/topic.php?id=1573