Currently I'm using 4 websites (ElgoMine, TrueMine, Bitchoko and GoGo Earn) and have also tested Marble BTC. All currently paying as expected.
I haven't done research on the sites you listed, but I'm quite sure you got scammed already.
Also, if you created that site solely for spreading your referral links then it ain't working.
Not at all. Any referral bonuses will help in the long run obviously but that's not my sole intention.
Also, I'm only playing with profits so I'm in a no-lose situation. It's just to track my progress and I'm in no way encouraging other people to follow my lead. Thank you for the comments though.