Context really is everything, which is why I found your comment misleading. The topic of her post is not that a male hit on her anywhere in San Francisco. What she's talking about is the fact that some male(s) interpreted exchanging of business cards as "giving out a phone number" which can then be used for personal reasons, such as hitting on her. Furthermore, she finds herself facing an interesting dilemma: she feels she can't be "harsh", because they're a business contact.
It is an interesting topic, at least for me: I'm male, so I haven't had to go through a situation like that and I don't have a clue how I would respond to something like that if I were in her shoes. Had I heeded your summary without reading the blog, I would've missed a mildly interesting topic.
I have anecdotal evidence that if women will show that she is more versatile in some hi-tech/IT fields she will get more attention from men, compared with women who don't show it.
I've seen a lot of comments in social media from SF women stating that they can't get a guy to even look at them.