A change in the PlayStation Network's terms of use (more than) suggests that they can sell user-created content as if it was their property:

You also authorise us [Sony] and our affiliated companies, without payment to you, to license, sell and otherwise commercially exploit your User Material

In other words, they won't pay you for it. Most likely this clause was put in for the benefit (well, their benefit) of those who were hoping to sell their LittleBigPlanet user-created content.

Sounds like a 180-degree turnabout from the previous claim SCEE's David Reeves made when he said that players will be allowed to sell their creations. Guess you can't moonlight as a LittleBigPlanet stage creator after all.

The document further outlines that they may sell subscription services or gain advertising revenue related to your content. Which means that not only will they not pay you for your content, but they'll earn cash off your work as well.

Not that this is a total shocker. It's probably just a legal clause saying "we are a subscription service that allows you to share user-generated content, so why should we pay you for sharing your content?" which is perfectly normal. Of course, it's another matter if they start putting price tags on individual downloads of user-generated content, but this likely won't happen.