He's a venture capitalist, why is he wasting his time with affiliate marketing? In the amount of time it takes him to build the link to amazon, he should have been working on closing a million dollar deal or doing research into companies or finding a better justification for supporting web fraud companies like zynga who make the internet worse like a lot of his investments, bit.ly to name just one more.
I also find him to be a bit hypocritical. He blasts conferences, then blogs all about having gone to them. He's lost a lot of credibility in my book. I don't think he or his investments make the web better.