Talked-of can be replaced with various synonyms depending on the context of the conversation. Words like popularized, famed, noted, and renowned are great alternatives to use when talking about something that has gained a lot of recognition or attention. Similarly, if referring to a much-debated topic, buzzed-about, controversial, and disputed could be used. For a more casual conversation, words like chatted, discussed, and conversed could be used instead. Meanwhile, for a more serious topic, terms like debated, deliberated, and exchanged opinions will suffice. Ultimately, choosing the right synonym for talked-of rests on the speaker's intent and the context of the conversation.