I think the general consensus is that no one's going to get in trouble for posting pictures, e.g. on twitter or instagram or their personal site, but I believe

I think the general consensus is that no one's going to get in trouble for posting pictures, e.g. on twitter or instagram or their personal site, but I believe that there have been cases of folks being pursued for using them for commercial purposes. There's definitely a fair bit of people claiming that personal use might also run afoul, but it seems to be the normal baseless panic you see around this stuff rather than anything to legitimately worry about.