FriendFeed gets real-time search.

Anyone know (and care to share) what FriendFeed's underlying search technology is? Entirely custom, based on Lucene or something else?

Whenever I hear FriendFeed, I can only think of FriendFace: <a href="http://www.youtube.com/watch?v=6rNgCnY1lPg" rel="nofollow">http://www.youtube.com/watch?v=6rNgCnY1lPg</a>

Great we get all of Robert Scoble's posts in high speed.

It appears to be accomplishing this using tight polling (from my investigation with FireBug). Interesting and useful, but not exactly innovative from what I can tell. Also, no way to pause or stop it?