BP Post Buttons plugin by normen adds a button bar to buddypress forum posting textfields. Features:
Insert bold, italic, blockquote etc.
Insert URLs, Images etc
Insert smilies
Buttons can be shown/hidden via javascript
Uses imgur image uploading service to add images to posts
Requires WordPress Version: WP 2.9.2, BP 1.2.3 or higher
Compatible up to: WP 3.0, BP 1.2.4
Download and Info: http://wordpress.org/extend/plugins/bp-post-buttons/