The win chance shown in lottery section of freebitco website is calculated wrong. The real win chance is bigger than what is shown.
Now the win chance shown is equal to [(your tickets/total tickets)*100%]*10. It's wrong.
The real win chance is bigger. Because the person who wins the first prize will no longer have the chance to win the second to tenth prize, and all his tickets are removed when next winners are being determined.
Even then I have not heard form anyone here if they had won a lottery. Few of my friends also play at freebitco and they also did not win any big prize. I wonder if this lottery system is fair ?
