This plugin gives the WordPress webmaster the possibility to enter title, description and keywords for the main blog, the user blogs and the buddypress pages.
The 1.x version is a complete rewrite of the old plugin.
It has a new logic, and much more functionality.
If you update from an old version, please go to the settings page and click on “Update Database”.
Plugin homepage: http://sven-lehnert.de/en/2009/04/29/buddypress-plugin-seo-for-buddypress/