On social media, SMTH is used informally to replace the word "someone". It is often seen in captions, comments, tweets, or DMs where brevity is important. For example, someone can post, "today feel smiling ..." to express vague feelings or "need something sweet to eat." It is usually used among friends or random target groups. Although it is accepted in informal contexts, it is recommended to avoid using SMTH in professional or formal positions to maintain clarity and fitness.

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