Yes, and where there are 20 new domains a day that you need to mute and people are hoping instances and bringing up small one-user domains those 3 seconds become a big load.. especially when most of us wont block a domain the moment a single person throws a fit. Its usually only after several incidents someone decides to block. So thats a lot of noise per-domain someone must endure before they silence that one domain, one domain among a great many needing blocking for some.