Is buxjunction a scam or real paying?

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Hai, Buxjunction is a ptc site where it is unique. Unique in the sense that as a free member you can get $5 upon signing up but you can only withdraw if you upgrade. Referring others is no longer important as long as you are upgraded then ready to go. you can earn up to $0.2 a day as a free member or up to $13 is you upgraded. You can only click a limited ads per day. It was i bit scam that ticks my mind but alot of forum says its paying, really a lot. So, shall i join?