RankBoostup

Try the free option for a day or two and then look at your stats... NOTHING... they take the traffic from your browser but give nothing in return. It is illegal here in the USA, but it could be Africans. Probably Nigerians. It's a cultural thing for them to rip people off.

Let me be honest, by using a traffic exchange platform you cannot expect sales/leads, or any conversion.
Although it's not bots, the users are not interested, so they would do what the platform tells.
I would suggest rankboostup to add a feature to ask interests and then give websites in a similar niche.
However, the reason behind my 5 stars is because of the advantages of Rankboostup.
It has very few limitations in the free version, so you can freely use the platform.
If you want to pay, their pricing is very low and I love it.
Also, one of the biggest advantages is the Alexa rank improvement feature.
You will improve your Alexa rank when you use Rankboostup. I can guarantee it.

Users have spent hours accumulating points and promoting their referrals, only to find that they won't be paid for their efforts.

Money not paid