BuddyPress

For example:

http://buddypress.org/community/groups/buzz-roll/

http://buddypress.org/community/groups/retweeters/

Why?

Some are confused.
The object plugin is BuddyPress Template Pack.
The relative URL is http://buddypress.org/community/groups/bp-template-pack/
But the actual plugin is gPress.

This BP.org site is currently undergoing some Ninja renovations. Not quite sure why the links you gave are redirecting to different BuddyPress plugins in this site. I got Eventlite the first time then gPress the second time I clicked on the link. Might be because plugins are good to WP 2,9,2 but then so are some other plugins.tagged buddypress
@boonebgorges ping! BP Ninja Lead

EDIT- Thank you for your patience. Housekeeping is most probably ongoing.
All plugins listed in BP.org extend plugins are available in WordPress.org plugin repository

http://wordpress.org/extend/plugins/bp-template-pack/

@mercime
Thanks for your help.