It was the first competition for Asrock on their new forums so its not odd that the rules were a little vague. Rather than flame the winner and complain about things being unfair give constructive feedback as to how the next comp could be done better. It was awesome of Asrock for doing this for us, the winner took a chance and it payed off its that simple. I wouldn't have done it both because I did not want to be disqualified AND because I did not think it would be fair. 

1. We did NOT rule anything about the amount of account a user can have

2. We did NOT rule anything about author's reply, so the reply from author him/her self counts

The one who win the mainboard is probably CHEATING by posting and thankyou on his own post by the participating account and another account. We can see it in the time of the post.

I think ASROCK should disqualify the winner NOW!!!

And choose the winner by ASRock according to the 1st post quality.

I would like to point out a flaw in the rules however, making replies part of the criteria to win means no one is likely to post in other peoples threads. Additionally there is no stipulation as to whether replying to your own post counts. I think the winner should be chosen at random by Asrock staff rather than based on any kind of replies. Its obvious Asrock is using this campaign to try and build a forum community, the best way to do that is not to have replies be part of the conditions to win, that will stop new members being discouraged from posting in other members campaign threads ;) If you want an active forum you need to encourage a community mindset