Im just wondering if anyone knows if there are multiple servers with Google? A few of my sites fluctuate between pages 1-3 for various key words. When I look in the morning they are on page 1 then a few hours later they are on page 3. The results look different too ie some other variations of ranking sites. However my main competitor always has his site at number 1 or 2 on page 1 always,no matter when I look. Is it multiple servers and if so,how do I get my site to rank for all severs at all times,not just some of them?