some people here must have known about Bingo Competition created by primedice as one of the big gambling sites in a dice game that began in early June and closed on 5 July 2016. This contest was successful enough to attended by 568 Primedice account, with a total of 22 951 bets.
What shocked me was when one of the team of Primedice said that there was one person who did abuse and almost got 1.5 BTC of this contest. So they had to double check all the accounts and cause payment to be delayed. And the fraud evidenced by the many newbie accounts who said that Primedice will not make payments even though their names are not listed in the list of users who join the competition. Until some people think they are only alt accounts and their owners are too afraid to complain with their main account.
from that thing , I conclude that fraud can occur everywhere, in any event especially giving a reward like this forum. but perhaps by providing rules that everyone should selfie by holding the paper with steemit text on it quite helpful in decreasing fraud activities in this forum. I really support the rules and already verify that this account holder is myself.
I personally would like to thank Primedice for their competition and congratulate them because they are quite successful in reducing fraud activity when announcing that from 568 primedice accounts, 481 accounts have been paid with total 21.8BTC
source :
https://bitcointalk.org/index.php?topic=1499249.0
https://bitcointalk.org/index.php?topic=208986.msg15512091#msg15512091