Useful Links for a Product Manager

Here's a list of links I find interesting and useful as a Product Manager.

• Description of what makes a good PM, from Ben Horowitz (Netscape's first PM) - http://benhorowitz.files.wordpress.com/2010/05/good-product-manager.pdf
• Startup Metrics from Dave McClure (Angel investor, entrepreneur) - http://500hats.typepad.com/500blogs/2007/09/startup-metrics.html
• How to hire a PM from Ken Norton, ex-Yahoo! and current Google PM - http://www.kennethnorton.com/essays/productmanager.html
• Smart discussions on Product Management - http://www.quora.com/Product-Management

Let me know if there's something that should be on this list!