I created a technology site a week ago and I plan to hire some people to comment of it to get things started. I also plan to contact companies for products to review. If the company goes and checks my site, can they tell that I paid people to comment. Like can they see the IP address of where the comment came from and such?
Of course not. They might check Compete or Alexa from wich country your visitors are from, but that's all. It's impossible they can check IP's etc.