Nice one for Caolan -- the largest GPL codebase in the world!! Now let's see what code we can nick for our own projects ;)
I notice openoffice.org is built on Tigris. That'll be a good demo of it, we can see what it's like.
BTW there is some kind of issue with sitescooper 3.0.0. The nightly snarfs have stopped getting 1/2 the sites for some reason. Must investigate...