Well, lets start with comparables: 1) Which sites have seen their traffic grow to millions of visitors daily within a few days of launch. I can't think of any

Well, lets start with comparables: 1) Which sites have seen their traffic grow to millions of visitors daily within a few days of launch. I can't think of any, but you must have a few in mind. 2) What did they do or fail to do to handle that growth?