will the rating effect my earnings?

I don't think it affects earnings. It's just how others on the board see you.

Congratulation! You have done better than me as you have got your 100 post and a star rating 7 in one weeks time as compare to my rating of 6 with the star which spend 3 weeks to achieve it. For more information of the star and rating, you may login to the site: http://www.mylot.com/w/discussions/573319aspx

A star rating of 7 is fine, although I would not be too concerned about the figure even if it was much lower. The rating is obviously associated with whether other members have marked your discussions and responses with a postive or negative. Considering that many members do not rate all rsponses, and also that a very small percentage of the membership will have rated your's, then the actual figure is not really indictaive of the value of your posts. As for the effect on payments, this is an area that nobody appears to be certain about.