Google Trends was not very useful in predicting the future price of silver. However, Trends is just one source of such Collective Intelligence, and it seems clear that there are better sources that will be more useful.
A thorough market research is very much indeed to track future price of any commodity. I hate determining future price only looking into daily charts from google.
The fact that "silver prices," is topping Google Trends is an interesting anecdotal aspect to the ongoing global concerns driving investor interest towards buying silver and gold.