In reality, it's about where you are located, first and foremost.
Secondly, it's about utilizing all you can that ClixSense has to offer, each and every day.
If you are in a country in which you can do tasks and/or offers, you can make very very
good extra money without referrals.
Upgrading has significant worth considering the above. The extra free daily bonuses
given, can add up considerably.
Referrals are nice if they are active and stay active. Nothing wrong with promoting to
gain referrals or purchasing advertising. However, keep in mind, you're only going to
earn on active direct referrals. AND IF you do upgrade, you earn down 8 levels BUT
ONLY on their upgrade, NOT on their activity.