That's a good question, and you'll surely get many different answers. I would actually think that you could use free items to make other free items, as long as the items that you make (in this case, the backgrounds) are for non-commercial use only. But like Mateo says, any readme or information that pertains to the free item will set the rules for it's use. SnowS

my DeviantArt page: http://snowsultan.deviantart.com/

 

I do not speak as a representative of DAZ, I speak only as a long-time member here. Be nice (and quit lying about DAZ) and I'll be nice too.