Top component FST Forest Oil has several years of promising onshore drilling prospects, with core holdings in emerging Texas and Canadian tight gas and gas shale properties. The company is currently planning on selling more than $1 billion in assets to reduce current debt and provide additional liquidity. Natural gas firms are a promising long-term play in a sector where global demand continues to increase. Prospective WCAT investors, however, should give this new ETF some time to gain traction before scooping up shares. WCAT faces two challenges when it comes to liquidity: the liquidity of its underlying stocks and the liquidity of the ETF as a whole during daily trading. Small-cap companies are less liquid than large-cap stocks, and most ETFs take some time to attract investor attention. Small-cap ETFs like WCAT are welcome additions to the ETF industry, but they should be considered in conjunction with a broader portfolio. -- Written by Don Dion in Williamstown, Mass.