This paper describes the characteristics of information selection on the Internet from three perspectives: selection of information to access, selection of information by technology, and selection of personal information to be disclosed. Echo chambers and filter bubbles undermine the diversity of information, exacerbate social division, and promote the spread of misinformation and fake news, making them significant issues in modern society. Additionally, selections regarding which information to disclose carry the risk of leading to Internet troubles including privacy invasions. Addressing these issues requires promoting information literacy and diversifying the information environment.
