I sorta think that for a large banner appealing to a naive audience, "copyright free" is more appropriate than "the copyright holder has waived the rights they

I sorta think that for a large banner appealing to a naive audience, "copyright free" is more appropriate than "the copyright holder has waived the rights they have under copyright by granting you a non-exclusive license to use this work pretty much however you choose." But hey, maybe there are more IP lawyers in the free texture community than I realize.