Bigdaddy continues to roll out and is now available at three data centers. In addition to 66.249.93.104 and 64.233.179.104, Bigdaddy is now up at 216.239.51.104. Remember that Bigdaddy involves new infrastructure and is not just a data push or algorithm update. Don’t take it as a promise, but I’d expect a new data center to be converted to Bigdaddy roughly every 10 days or so. Again, take that as a rule of thumb.says Matt Cutts on his blog.