I think the most famous example is probably “Pale fire” by Nabokov. Not sci-fi, but very very fun! George Perec write some interesting concept books. One is about this apartment in Paris where every chapter just describes a random room in the building, but slowly tells a story of the inhabitants.
wrt TikTok I assume the poll just asked what other platforms you are on, not if you are posting career related things on the platform. Most grad students are in their 20s and probably use TikTok for entertainment.
That may be intentional. I know they want ai companies to have to pay to train on all that human written conversation. Right now it can be searched and accessed on google cache.
Red currants :)
Edit - apparently they are black currants. Still tasty!