The document discusses the characteristics of online communication such as texting, emailing, and posting on social media. Some key points made are: - Online communication lacks nonverbal cues like tone of voice that help convey feelings and can lead to misunderstandings. - It allows people to communicate briefly and conveniently but messages may lack depth or context compared to in-person discussions where people can talk about various topics. - While asynchronous, online communication can be shared widely and lasts permanently.