The FAQ, in fact, says something very similar to what you claim it doesn't say:

> If the infringement appears on a personal blog, forum, or web page, I usually ignore it. If I have time, which I generally don’t, I may issue a takedown notice to remove infringing copies from personal sites most likely to feed downstream infringements. If the infringement occurs on a corporate or organizational webpage, product, broadcast, or similar, even if it is just a small internal image, I generally submit it to ImageRights.