Anyone ever notice that Google Dances when you hit re-load? Which is the legitimate ranking? I always hit re-load once..
This would be happening for big tale and uncompetitive keywords Small competitive keywords won't change its SERP frequently
i noticed it every time i search my keyword my rankings are moving up and down the result page but i realize that it is a good sign because base on my experience everytime it happen to my rankings i am getting a good rankings for that keyword once it stable.