With all the eth nonsense happening I think Rubies will float under people's notice then have a big breakout.
No,It will float because there is no POW and they are just asking enough money for coins which have nothing to backup.I can make hundreds of coins and ask people to give me Bitcoins for that.I am not saying it is scam & also it seems there are many people buying their contracts.
The betting thing is just the Wager trick.The house makes profit from the amount wagered and not by the win/lose,the short term win/lose still affects anyways.
Mining just gives purpose to use gpu or rigs which cost money betting cost money same thing different methods. Eth is backed by nothing and launched 18 mil ico I'm not saying it's a scam either but based totally on hypothesis and speculations. At least Rubies is business backed.
I should throw in the fact if you win while using their site then the rubies were free and you made btc + rubies. It's not like you lose every time you gamble unless of course you just suck at life lol.