It makes sense in the context of online communication because:
* Conveying Emotion: "Lol" is a shorthand way to express amusement, laughter, or lightheartedness. It helps convey emotional tone in written text where facial expressions and vocal inflections are absent.
* Informal Communication: It's often used in casual, informal settings like online chats, messages, and social media, where formal language isn't necessary.
* Brevity and Efficiency: In the fast-paced world of online communication, "lol" is a quick and easy way to express a simple emotion.
However, "lol" can be misused or interpreted differently depending on the context. It's important to consider the tone and intention behind the message when using "lol".