The short answer is that Fanpop provides an "image credit" field which every user should use to make it clear that no ownership of rights to the afbeeldingen are implied door being geplaatst here: the afbeeldingen still belong to <these people> (what u insert in the image credit field).
Do a zoek of Fanpop (or just participate in a forum long enough) and u will quickly find dozens of pages of people discussing how to properly use the image credit field. One fairly straightforward method is described in this article:
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