All she's complaining about is not that she gets hit on, but that she keeps getting hit on in the wrong way. She gives her contact details out to men whom she thinks want to be business contacts, who then wind up calling her for dates.

It's a simple rule: if you meet a woman and you're interested in her in that way, then hit on her properly and ask her for her number in a way that makes your intentions non-ambiguous. If you're interested in her professionally then by all means exchange business cards. If you're interested in her in both ways then... well, choose one.

#2 doesn't make it right.

Does a woman not have the right not to face that? If you've got a girl, don't you feel personally that she shouldn't have to face that?

At what point are aggressive come-ons just harassment?

From my perspective? No, she really doesn't have the right not to face that. She's a woman. It's biology. Part of being a human being is interacting with other human beings, many of home would like to sleep with you.

She should have to deal with harrasment? Nope, but that's a different thing entirely. Somebody scoping out your card and then asking you out on a date isn't harassing you. They're asking you on a date. It's what happens after you say 'no' that things become different.

"Does a woman not have the right not to face that?"

Are you speaking for ALL women?

In Brazil, women love it when you aggressively peruse them.

In SF, men don't talk to women, and women's number one complaint is exactly that.