It's always going to be possible to come up with some circumstance the author didn't foresee or insulate themselves from that might mitigate the specific facts they're using to promote their idea. But who cares? That's a nerd message board game.
The question is: is taking someone's business card under the auspices of a business inquiry and then using it solely for your own personal reasons unprofessional or not? The answer (I'll go out on a limb here...) is: yes. It's unprofessional. Interesting point, blog author! Thanks!
Your single paragraph summary was immeasurably clearer than her entire rant. Yes, under those exact circumstances it is both unprofessional and stalkerish.
The question is: is taking someone's business card under the auspices of a business inquiry and then using it solely for your own personal reasons unprofessional or not? The answer (I'll go out on a limb here...) is: yes. It's unprofessional. Interesting point, blog author! Thanks!