Another advantage of those contests running here in bitcointalk forum that makes Roobet quite different from other platforms is that in most of the contests, forum users are are not required to provide their emails or any additional personal info to join the contests except those that require to have an account in the platform to guess number of wagers for instance or to find something hidden in the GUI design.

Everybody is welcome in Roobet. I think it's one of the fewest good gambling platforms in the crypto gambling industry nowadays and other platforms find it a little hard to compete with it.