BP Better Messages is a BuddyPress plugin that turns BP Messaging into a threaded instant messaging type communication tool. You can disable the requirement for a subject line and also enable name search and file attachments.
This is a simple plugin which allows the BuddyPress Admin to enable blog post updates to be advertised in the BuddyPress Activity stream. By default, notifications to the Activity stream only happen on new post creation, if the post is then updated later, there is no activity update and your sites users will not be informed of the changes. This can be discouraging to your authors looking to inform site members of changes to published posts. BP Add Post Updates to Activity fixes this.
BuddyPress Xprofile Custom Image Field is a plugin that adds an image selector to the range of profile fields available to BuddyPress. When installed, it allows for users to add images to their BuddyPress Extended Profile.