Bamboo is no scam and no full on pyramid scam. Yes they do assist a user who gains referrals with a small bonus. With the intent they are targeting an audience who does not get or have money to invest.
You only need an invitation to login. Guess what reference money is limited to R400.(R5 per person). This means you can have infinite amount of 'agents' members who joined beneath, not a single one of them is required to put any money into Bamboo, you will only get R400 max. Nothing more. So how is this a full on pyramid scam. People need to wake up. Phone Bamboo self and tell them you want to get your business active in the online advertisement business. That is what Bamboo does, provide a solution to generate traffic for your online adverts as a paying customer.
You can make the money as they claim without the need to have single agent or referral beneath you. That is completely against the fundamentals of a pyramid scam.
Its not easy money, if you dont want to invest or spend money, you will wait more than 3 months before you can receive a payment, and then another 3 months.
On top of that Bamboo have gone to some lengths to prevent fraudster and keeps implementing updates to their vitrification process to counter these fraudsters who find ways to cheat their system.
Bamboo cannot tumble if everyone stop investments all at once as their business is not dependent on investments or any form of financial input from the users who perform the online traffic duties(tasks).