I'd add a "mentee manifesto" too, since mentorship is a proverbial two-way street. I actually wrote an essay on that topic from an education perspective: "How to get your Professors’ Attention — along with Coaching or Mentoring" (http://jseliger.com/2010/10/02/how-to-get-your-professors%E2...) because I noticed that some students systematically make mistakes they may not be aware of when it comes to seeking mentors or advice.
That is different to just listening, or even the 70/30 rule. Being Socratic means actively questioning the assumptions and model of the mentee, rather than trying to build on their assumptions with your ideas.
>I’ve been running TechStars for six years now. . . . we’ve seen those companies go on to raise about $100M in funding (averaging about $1M each post TechStars)
I would have been more interested to read about valuations than about amounts raised.
while they haven't gone through the trouble of posting valuations (I agree, it would be nice to see) they do have a results page http://www.techstars.org/results/
[0] http://www.phrack.org/issues.html?issue=7&id=3&mode=...