关键词：考研英语、原文、答案
题目：以下是一段考研英语阅读理解原文，请阅读后回答问题。
原文：
In the past, when people wanted to know about a product, they would ask their friends or family members for recommendations. However, with the advent of the internet, the way people gather information about products has changed dramatically. Today, individuals turn to online reviews and ratings to make informed decisions. Online platforms, such as Amazon and Yelp, have become popular sources of information for consumers. These platforms allow users to leave comments and rate products, which can influence the buying decisions of others. Consequently, businesses have started to pay more attention to their online reputation, as negative reviews can have a significant impact on their sales.
问题：What is the main idea of the passage?
答案：The passage discusses the shift in the way people gather information about products, from asking friends and family to relying on online reviews and ratings. It also highlights the importance of online reputation for businesses.