the signups got better because you get this time only people that are really into that kind of content or think it is worth their money. Those free loaders don't care to lose the trail fee. In three days to pull the whole site empty with a tool made for it.
Retention is getting better because you get buyers. These people are willing to pay what ever it takes to see your content if it is good.
Trails don't even work on ref share program. Webmasters are not making enough on it.
