You know what, once a platform is known as a scam, have shady behaviour, people will boycot it no matter what industries they are in. Rights of players/users is more viable on this forum. Putting red tags, flag that can hurt the websites reputation once proven.
Freebitco run so many years already, although issues are unavoidable but most of them were solved already, and the site is still running, so asking if they are scam, it's NOT.
The OP has no valid evidence if the lottery in freebitco is a scam or not.
Maybe only a hearsay or doubt, whatever it is, he/she should have done the research first.
Also, if the OP wants this to be formal complaint, he/she can follow the scam report format -
https://bitcointalksearch.org/topic/scam-report-format-use-it-to-make-scam-reports-properly-260073Anyway, freebitco has been here for years already, and actually generous to its users giving free satoshis and other promos.
So don't know where the OP is coming from, but maybe one is the results of the lottery???