A survey from Forrester shows that search results are the 3rd most trusted online information source, behind only email from friends and consumer reviews.
The findings are significant because they show that although people might not trust a corporate blog or news article in the mainstream media, they trust it a lot more if they found it at the top of Googles search results.
So if you are looking to gain trust in your brand the best way to do it is to start an SEO campaign and add consumer reviews to your product pages.
Wikipedia does give a bit of a paradox to the results. Only 33% of people trust the site and yet it’s at the top of probably 90% of search results. Do people trust Wikipedia articles more if they find them via Google?