"This is true even for people you know personally! A story: when I wanted to meet with a really busy friend of mine in SF, I first sent him 2 twitter DMs, then 2 emails, and then 3 text messages, letting him know that I will keep sending one text a day, until an email from him finally landed in my inbox letting me know that he would love to get lunch."
That's pretty creepy. Seems like a good way to get a restraining order