Obviously promoting some Ponzi scheme and OP still arguing that this isn't a promotion.
Letting people join the system because of a prize pool is considered as promoting.
There are no winning on round #1 and round #2 so it means this promotion will keep going and keep bumping.
Some members got red trust because of supporting this Ponzi scheme.
Check this thread here:
https://bitcointalk.org/index.php?topic=5192283.msg52776733#msg52776733Thanks for letting us know.
I don't know if you have read this thread but before I have joined this promotion I asked questions about it and looks like we are safe because we have done nothing wrong and nobody is supporting, advertising or promoting this service. I just wanted to try them out with the free money to be able to confirm or deny this scam accusations. Nothing more.
When I read the thread you linked, all I can see there is that this BtcDoubler is still paying. One newbie was red trusted for promoting the service but actually I don't know if this rating is fully accurate because the doubler is still paying and this newbie member did nothing wrong (in my opinion) only played there and shared it in the post. I think tags should be given only to promoting members when this service stops to pay. Actually they are paying, which is confirmed by Legendary member in the thread linked above.
Additionally, the first round wasn't successful because there were not enough participants and nobody guesses the special number, which was encrypted and hash provided before the first round started. The same is with the second round, which is actually running right now.
Participants are not going to be red trusted. This makes absolute no sense. Red trust is for scammers ,not for their victims...