Red and green star system, what is it for and how do I use it on my site please

[uk2014.kinze]

I have been watching a red star on my site with an ever increasing figure beside it and I am getting quite worried...am I doing something wrong and being punished by eBay?  I looked at someone elses site and they had a much lower number and a green star, does this mean that I am increasing my bad behaviour somehow...please help, Sara

[pixiesen2012]

the 'stars' change colour as you get more feedback, you haven't done anything wrong!