There are a load of threads where the title is a question - ‘What is your favourite childhood food’, ‘Where would you like to live’ sort of thing, then the OP gives their very brief answer and then it’s just a long long list of answers from other posters, with the OP never coming back.

They’re mainly by posters who seem to be very new & don’t post anything else. Examples are https://www.mumsnet.com/talk/holidays/5076719-youre-offered-a-free-holiday-but-the-catch-is-it-must-be-somewhere-you-have-never-been-beforewhere-are-you-picking?page=2&reply=135429686 and https://www.mumsnet.com/talk/chat/5068789-what-have-you-gone-off-recently

Edited to add https://www.mumsnet.com/talk/holidays/5079904-apart-from-your-country-of-birthor-live-what-countries-do-you-have-a-soft-spot-for by another poster following exactly the same pattern.

Are they some kind of AI bot?