Can One Negative Search Result Really Influence a Buying Decision?

I've been thinking about how consumers research businesses online before making a purchase.

Most companies have a mix of positive and negative content across the web, which is normal. But I'm curious about the impact of a single negative search result that appears prominently when someone searches for a brand name.

Have you ever changed your opinion about a company because of one search result?
Do customers pay attention to negative articles, complaint sites, or forum discussions?
How much weight do you think people give to search results compared to reviews?
Is a single negative result enough to damage trust, or does it take a pattern of negative information?

I'd love to hear perspectives from consumers, marketers, business owners, and anyone involved in managing brand reputation.