I liked the article as it was concise and gave good tips for where to start.  Is anyone out there using the SQLH2 tool available from MIcrosoft.  I am using it and it is very helpful as it provides reports (SQL RS) that allow you to track usage over time.  It is not as user friendly as some other tools available from Idera and others, but it is free, which at my compnay makes it the only one I can use to monitor.