BuddyPress.org

Try SEO for BuddyPress:

https://wordpress.org/extend/plugins/seo-for-buddypress/

Make sure you remove your <title> tag in your BuddyPress theme otherwise you’ll have double <title> tags.

Not sure about the plugin’s compatibility with BP 1.1-RC1.

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Also just some friendly words of wisdom… try not to bump your post less than 24 hours after you have posted.