i've got 2 more click and then, and the same price i've got MMO is very nice niche and i think i must build .com to get more
That's normal you can even get high earnings than 1.68 per click depending on the keywords of the ads.
that is compeletly normal today some one enter my site and start to refresh the pages and click on ads
You should be happy about it You earned some good money just from one click. Unlike many people [including me] who only earn $0.03 per click I think you should not worry about this click. As long as the clicks are genuine, you do not need to worry about anything.