If you’re not building a core network of tens of people, but rather a large one of hundreds of people, each person can get only tiny bits of your time.
Business card = fine, but not the best. Gotta catalogue, write them an email, blah blah, and they don’t write you back and you feel like shit.
Line = ok, but a bit aggressive/invasive at times
Facebook = same
Just add people on LinkedIn
“Oh this person is sharp”
“She knows what she’s doing”
The Power Law: Venture Capital and the Making of the New Future