Aside from that, the member will get $50 for each person who invested under his name.I saw my colleagues earning a lot already from this and they are inviting me to join but I am confused thinking maybe this is a form of ribaa. Is this business halal?
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This is forbidden and you are not allowed to participate in it.

There is pyramiding business called AD Click where in anybody who wants to join should invest SR5300. Every week the member will get $150 just for watching the advertisements in that website.The ads are exactly those we see on tv.

Riba | March 2, 2014 4:42 am
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There is an apartment leased to a person by the owner. This person didnt get family visa so he is sub leasing to me as i am looking for apartment. I think this person is sub leasing me for a bit high price than the original rent.
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If a person has taken loan of very big amount from a bank and he pays it on installments, for example in 6 years as he has other expenses as well rent of the home, bills, and school fees of children