I am always careful when it comes to a platform that ask for referral or to upgrade account before withdrawing the money that you already worked very hard for. The scam usually take place between the upgrade time and getting to minimum withdrawal. It is just my opinion.
This "weshareabundance" has been quite popular program. It was repeatedly being shared and even used by paid to click sites to refer people. I am not sure if this is a scam because it is no longer being promoted now. Any updates about it?