we have seen that duelbits are very active in introducing contests, this is why they can truly attract regular players here. they have good marketing people and know how to sustain these players. they may really survive long in this competitive industry.
One of best things with Duelbits contest is, they allow to bet with small value. I could be wrong but I think their main aim is attracting new users to their casino, and not try to steal money from failed bets in their contests.
If they want to force gamblers to bet more, and get more money from gamblers, they would require high value of bet to be eligible in their contests.
YES! Through several contests and campaigns, they are very active in marketing. The sole purpose of Duelbit isn't to rob a lot of money from gamblers. Duelbits still at their starting stage, heaps of advancement coming so put their focus on advertising give the increase in their business. I'm sure Duelbits exactly on the right track.