• ETF Screener lets you monitor your portfolio
• Be careful when buying ETFs at a premium to NAV - check premium to NAV
• ETF Categories
• WikiInvest ETF Page
• Morningstar ETF Screener
• ETF Performance Table
• ETF Reports
• Commission Free ETFs at Etrade and their rankings
• Commission Free ETFs at TD Ameritrade
• Volatility ETFs contango effect.
• ETFs of stocks with strong insider buying
• Analysis tools for ETFs
• VIXY or VXX
• Timing with ETFs
• Zingfin.com find correlations among ETFs
• ETF Channel check Beta, Premium, etc.
• IndexUniverse screen ETFs, see fund flows, etc.

GDX is a good proxy for gold.

• BDH Blog & Current Signals
• BDH Current Signals
• BDH Historical Signals on a chart
• Top 5 ETFs using BDH Strategy
• How to boost ETF returns using RS
• BDH at ETFScreen
• BDH Trading Performance