This "scam" is no longer active, as far as I know (so it won't hurt anyone), but your intentions are dubious at best. In fact, you have nothing to lose (read reputation), so no wonder you can stick to such dirty practices as blackmailing, and I won't be surprised that you yourself are doing this on grounds far from being entirely altruistic.
DiceBitco.in has scammed, and they have not compensated all the users that were scammed. Until they compensate all the users that were scammed, they are a scam.
I find it preposterous that you assume (i) I have not lost money in DiceBitco.in and (ii) that I have dubious intentions beyond justice.
I don't think leaving trust feedback for untrustworthy actions, while notifying people in advance (some haven't signed into this forum for a while, but their sig is still up) is anywhere near blackmail.
Plenty of people here leave feedback for other people's scams, and plenty of people threaten to leave negative feedback if a scammer does not compensate.
I consider people who advertise DiceBitco.in untrustworthy because:
1) DiceBitco.in has scammed by not paying out winnings people should have received. This has been established earlier in this thread.
2) Participating in a signature campaign is promoting it.
3) Promoting a scam for money is untrustworthy.
If you dispute 1 or 2, I'd be happy to hear your arguments. 3 is my personal opinion (which I think most people will also agree with), and trust is opinion based.
Do you disagree with any of this?