What does the "Rooms" feature of FriendFeed do? It enables users with common interests to share their views and streams, control the appearance of their posts, update multiple social networks and blogs, and curate someone else's blog.

The "Rooms" feature on FriendFeed was designed to allow users with common interests to share their views and streams. Essentially, Rooms functioned as a space where individuals could come together to discuss specific topics, share content, and collaborate around shared interests or themes. In a Room, users could post messages, links, pictures, and videos that were relevant to the Room's focus. Much like a forum or a group on other social platforms, a FriendFeed Room was a centralized location for like-minded individuals to convene and interact with each other's shared content.

To give you a bit more understanding, FriendFeed was a real-time feed aggregator that consolidated updates from social media and networking websites, social bookmarking websites, blogs, and microblogging updates, as well as any type of RSS/Atom feed. Users could subscribe to each other’s 'feeds' and also see updates from friends aggregated in a real-time home feed.

The "Rooms" feature of FriendFeed was particularly useful for creating a semi-private or dedicated space for conversations on particular topics. For instance, you could have a Room for a project team, a hobby group, or a fan club where the content and discussions were targeted and relevant to the members.