Given that a web site is a public place, the onus is back on the webmaster to be aware of all the lurkers (good or bad intentioned though they be) and to take measures to select out the undesirables. My point is that the tools are there; she chose not to use any of them, instead opting for the equivalent of a white sign with simple black lettering proclaiming 'all trespassers will be shot' - which won't reduce your jail time any in many municipalities.
With that (and my previous two posts) said, I do agree that spidering should be a bit more proactive. I go into this thing knowing full well about the googles and yahoos and asks, but then get blind-sided by picsearch (and probably 30 more that I haven't happened to run across in my server logs). I have to admit though, that "I didun know" is usually followed closely by "well now ya do".