Venutius

Adds a a new “All” tab in the BuddyPress Members Profile and makes it the default landing tab in order to create a Facebook like Wall.
Simply install and activate the plugin then visit Profile>>Activity.
For more options visit Settings>>Profile Activity Wall where you can choose to remove the other tabs and also setup homepage and login redirects so that the activity wall becomes the default homepage for logged in members.

BP Profile Activity Wall

Adds a a new "All" tab in the BuddyPress Members Profile Activity and makes it the default landing tab in order to create a Facebook like Wa …

Nordvind

Puts a “wall” into a blog, where blog authors can chat. Wall can be hidden from unregistered users. 
Intended to use in community/corporate blogs, for coordination between authors.

BP Profile Activity Wall vs MBlog