Rankboost is all about traffic Exchange. And Google hates link exchange. So I advise you to avoid such techniques to improve your SEO score. It will drive so many users to your site but they might not be relevant. So the bounce rate will increase.
Follow the white hat techniques to keep your site safe from algorithm penalties. Slow and steady wins in SEO. if you have a traffic of 50-100 users daily but they are Genuine. So chances are there for conversions. even if you drive traffic by such activities, your conversion rate will remain the same. So avoid using such gray and black hat tactics.