Monitoring trends in the market, making innovations, and promoting your products can take a lot of time; any hour that you get sidetracked means that a competitor might be cooking up ways to stay abreast of the competition. So if you’re handling multiple projects, it might be better to handle them one at a time.

Presell pages have been known to lead to conversions of 12-15% or more, depending on what you are affiliating. So I definitely recommend taking advantage of their power.