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The BookTok community has erupted after creator AllieRoseCo announced she had trademarked merchandise featuring the phrase 'Hot Girls Read'. User backlash was instantaneous, with many accusing her of attacking small businesses and even betraying her own followers. On this episode, Marianna explains why BookTok is such an influential marketing demographic on TikTok, and what this controversy tells us about the fragility of influencer careers tied exclusively to a聽personal brand.

Also this week, a viral photo which appears to show Donald Trump meeting with a group of mysterious figures has led to a raft of theories about their identities. One of the most prominent narratives to emerge is that the men are representatives of the mythical kingdom Agartha. Matt dives deep into the lore on Agartha, and its adoption by Nazi occultists. Why has this theory seen such a resurgence among young people on TikTok, and how dangerous is the implicit ideology behind it?

Top Comment is hosted by Marianna Spring and Matt Shea. The series producer is Laurie Kalus. The social producer is Sophie Millward. The technical producer was Mike Regaard. The editor is Justine Lang. The senior news editor is Sam Bonham.

If you want to get in touch about something that's popped up on your feed, our email address is topcomment@bbc.co.uk or you can send us a WhatsApp on +44 330 123 9480.