Social media and public opinion affect cryptocurrency prices through sentiment - driven trading. Positive news or sentiment on social media can attract more investors to buy, driving up prices. For example, if a well - known figure endorses a cryptocurrency on social media, it may lead to a surge in buying. Conversely, negative news can trigger selling. To predict prices through sentiment analysis, data from social media platforms, cryptocurrency - related forums, and news articles can be collected and analyzed. Algorithms can be used to measure the sentiment polarity (positive, negative, or neutral) of the content, and based on historical data, predict how the sentiment will impact prices.