I probably wouldn't post about it anywhere. I might really want to.Do you pick it up or leave because of the law? Yeah right!!
Case in point, before I knew about the law I had picked up some Native American pins off the bottom of the Santa Fe river. When I found out about it, I had already posted about them on social media. Ergo, I made sure they went to a real native American. Why? They had just busted a bunch of guys for posting about their finds on FB. Mind you, they bulldozed a site on state lands, but why take the chance?