In most cases trials with revshare will earn you less. There are however, many instances where you need a trial to convert a surfer and that is usually a combination of niche and traffic source.
We have found a big difference in ratios on tgp traffic with trial vs non trial for 4/7 of our sites..... but in the same breath I have to admit that full price signups from tgp traffic are pretty bad aswell. I find the more general your niche and the more large sponsors with the 'join one join them all' sites ... the more need for you to compete with them using a trial. But the more microniche you go the less need for a trial
