Fred Wilson: Competing To Win Deals
avc.com
avc.com
In fact, it seems straight out of Dale Carnegie, and I'd guess that we could accurately summarize these points as "Build a good personal and professional relationship, and then see if that becomes a good business relationship. Even if it doesn't, maintain the personal/professional relationship."
His points about using the services/products of the entrepreneurs you're interested in and about not leading with a term sheet are all about humanizing the relationship into an actual relationship, rather than one more item on one's investment portfolio.
I keep in my mind that the same thing can be said to entrepreneurs. talk to VC's like you know them in person to person.