I don't think anyone is suggesting you have to keep track of it, particularly if you don't intend on selling your work. It's a moot point.

I'm not a Poser merchant but I have to keep track of what I can use or not use because I sell the resulting animations and illustrations. And I don't have time to keep track of it, so I just don't get anything that is restricted.

I grant that I still run some risk for all the stuff from the "olden days", but frankly, I can't think of a lot of it that I use now anyway, because the program has moved on, and either the stuff is outdated, or there is a better replacement.

But it's not accurate or fair to presume that only merchants really need to be concerned. Anyone who wants to be able to sell their work needs to know what rules apply to using someone else's content.-R