Boone Gorges

CUNY Academic Commons

Allows admins to import data from an arbitrary RSS feed into their BuddyPress sitewide activity stream
The plugin imports RSS feeds every hour. You may find that you need to decrease your Simplepie cache time to make it work: 
 add_filter( ‘wp_feed_cache_transient_lifetime’, create_function(‘$a’, ‘return 600;’) ); 
reduces the RSS cache to ten minutes, for example. Put that in your bp-custom.php file if you are having problems with the plugin.
At the moment, the plugin uses the Author field from the RSS feed to look for a matching author in your WP database. If it doesn’t find one, it uses the unlinked text ‘A user’, as in ‘A user edited the wiki page…’.

BP External Activity

Allows admins to import data from an arbitrary RSS feed into their BuddyPress sitewide activity stream

ViitorCloud Technologies Pvt Ltd

Mitali Rajpurohit

It automatically set all external links to “nofollow” in website content.
Seo friendly.
Plugin Functionality:
1) Activate it from backend and it will automatically add nofollow in external links used in content.
2) No additional settings required.
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Nofollow External Links (SEO)

It automatically set all external links to "nofollow" in website content.

BP External Activity vs Nofollow External Links (SEO)