What is www2.google.com ?What is www3.google.com ?please help meThese are different google servers.dont wory about it to much.they are usefull for seeing a google dance but I wouldnt worry about it if i were you.but what is his benifitGoogle has a variaty of servers worldwide to handle all the traffic.some of them update before the others but by the end of an update they all have the same results.you can see when an update is taking place as the results are different.when the update is over they are generally the same again.If you find the google dancer tool, its very useful in order to know precisely when googlebot is dancing, but other than that, there's not much concern we should pay to thatI guess JayBurn is talking about this. Seems like a useful thing to watch the changes with.Exactly, there's also a nice tool you can find that's called Dancer, it shows a live bar graphic with all of Google's servers, it also checks your SERPS about every 2 minutes so you have a constant feed on info.