I'm using a whole range of domains for my 404 purposes.
I've got a bunch of servers, every sever has one single domain that recieves every 404 hit from that specific server, this way i can track all my 404 hits per server.
The only thing that the domain does is redirect to a central uberdomain, wich gives me a total figure of all 404's i'm recieving, and from there all the 404 gets redirected to whatever i want.
Kinda neat if you ask me
