I like that aspect of Twitter, you can just create an account for an event (lie a barcamp) or an interest group and aggregate messages of related people. It would be much easier if they would enable autofollow, but anyway - I like the simplicity, whereas FriendFeed now seems to have two different concepts to achieve the same thing (or so it sounds).
I have been using ff ever since the closed beta last fall/winter. Even though I have been careful to not follow too many people (currently 42) in order to not drown in a flurry of feed items, I have missed a feature such as rooms all along.
Being able to organize discussions on a certain topic in a separate feed should help reduce clutter and provide for "time-efficient" reading.
Right now, you end up doing doing a whole lot of browsing and context switching when filtering news, technical posts, tech talks from among "funny" YouTube videos shared or "liked" by your contacts.
