What does it mean to have a social network where you can't delete anything?

I don't think we have quite grasped the implications yet

Studying crypto so that I can help onboard others

You can, but someone can easily index everything before you even get a chance to delete it

What does it mean to index. How would I index something that I find?

here it just means retrieving real-time data from the FC network and storing it in another database

this is one way to do it

here it just means retrieving real-time data from the FC network and storing it in another database

this is one way to do it
https://github.com/farcasterxyz/hub-monorepo/tree/main/packages/hub-nodejs/examples/replicate-data-postgres