Good question. Normally an ICO should be backed by plans and proper fundamentals, otherwise it is putting your money on red or black on the roulette table. Maybe the safety net of a % buy wall by the exchange plays a role, or the practice of a dev team buying up the ICO to create a false sense of demand sometimes plays a role. Since there are no fundamentals with EKN, people probably took a chance and if it fails there is the % buy wall to recover their money. However, an ICO sold out in a few hours raises the eyebrows. Lets say a DRK/DASH creates an ICO with its fundamentals supporting it, it would make perfect sense for an ICO to sel out in a few hours. On the other hand a coin with the characteristics that I posted a few posts back being sold out in a few hours does not make sense.

It is all up to the dev here to create the supporting fundamentals or it will fail. They have 25 BTC to do it with.