Do you have T&C's on your site? And if so, are they near the "free trial" links?
I do have a T&C. But also when I set up the page I try and imagine myself defending it with a straight face. If I can do it with a straight face, I let it live.
Like for an example how about these for grants (bolding for emphasis on important differences, not the same bolding as on the LP)
Description 1: "Get
product completely free, just pay shipping"
Description 2: "Today you can
try product free, just cover the cost of shipping"..."They also have a fantastic membership site for their customers that's free to access for 14 days. Be sure to check it out; nearly everyone we surveyed considered it to be exceptionally useful,
and continued to use their account even long after the trial ran out"
Not perfect copy, but that's not the point. The point is that there's eloquent ways to give them the idea that the free trial
does run out, and there's some kind of product other than just the part they get immediately.
If you smack them in the face with "You're going to get billed large amounts if you forget to cancel" yeah, you're going to lose conversions. But damn. There's more than one way to skin a cat. Some of which are at least defensible.
The other thing is only quantifying the problem, not the results the solution gave. So like "I was 50 pounds overweight" and making it clear the product helped, but not saying "I lost 45 pounds" on the LP (I don't care as much about text ads).
The idea is just that people expect the product to work to the same degree as the example/blog. So if you can make those expectations a little more broad, the product doesn't have to deliver the same results, just has to deliver
something (success is relative).
Once again, these can hurt conversions some, especially if not done right. But if done well, they could probably reduce some complaints. And that's what gets people in trouble. Complaints. Not the violation itself.
I can't say I've done this 100% of the time, but I'm getting better.