Buddypress Profile Widget for Blogs is a plugin for buddypress +wpmu based site by sbrajesh, which enables blog admins to show their profile on their blogs.
Features include: * Show list of users of current blog by their role(e.g list of admins, list of authors) * Show Avatar/Hide avatar * Show All xprofile fields/ only selected xprofile fields.
Download: http://wordpress.org/extend/plugins/bp-profile-widget-for-blogs/