I am a new Amazon PL seller, recently started using AMZTracker to track my Sales Rank as well as ranking against keywords. Here are my 2 questions for ya:
1. Sales Rank for couple of my products is jumping up and down. So one day it goes +1000 and another day -1500. I don't seem to be able to see the logic.
2. I am watching my Keywords rankings as well. Sometime again they go up and the other day they go down.
What influences those two metrics and how can I get control over it if at all possible?