My answer may seem rather boring but I use the forecasts from VIP room to trade commodities. I find this type of financial instruments more influenced by fundamental data than any other.
Therefore, I closely follow not only forecasts but also economic and political news.
At first, forecasts and news events may not seem significant. But with time you will learn to identify the hidden meanings and influence of particular world events.

Apparently on those asset classes that I am used to trading. Usually these are FX pairs, cuz I admire trading majors due to the deepest liquidity and some volatility that opens for me tasty opportunities. Volatility is avoided by traders, but I am the one who feel that it's possible to make money on sharp hikes and drops. Especially taking into account that even during high volatility period, the orders are executed without slippages.
Forecasts are helpful, by the way, I don't base my opinion fully on them, but bear them in mind.