Amazon Affliate getting unusual click
 

I am running a amazon affiliate blog from last two month. Now i am getting 15-30 visitor per day. One day get sell other they not.
I was trying to create few high pr(Most of them no follow) backlink from last 3-4 days. Mainly blog commenting.

I check my visitor by a plugin "SlimStat" and Google analytics. I am still getting 20-30 visitor per day. And normally, i get 5-10 click per day.
But from last two day i got click 457 and 1124 click and surprisingly all are unique click. How possible this? Where still i my getting visitor between 20-30 per day.

I am using Amazon Associate API for promoting affiliate product.(Image and text both). And few direct amazon affiliate link also include their.

I am not understanding why i am getting so much click. How to stop this kind unusual click?
Feeling little bit nervous. How can i avoid this?

Re: Amazon Affliate getting unusual click
 

Can you share more details on which topics you commented on and any new posts you have written for your affiliate blog?