Is this really a problem with Silicon Valley? I think it's an universal problem you'll find in all industries.
I'm starting to think that I am (or we, men, are) blind to this. If it happens as much as is reported (I don not work in SV, but I'd guess Eastern-ish Europe would be worse), then it must happen before out eyes, or even worse, we are the ones doing it. I honestly can't think of such incident, but this suggest that there were many that I simply ignored, didn't see them as such. edit: To make it clear, I definitely did…
You don't have to go to Eastern-ish Europe for that. I've spent some time in offices around London over the last couple of years and I've found that it's much more likely to witness sexually-charged conversation in the IT workplace than here in the US.