Getting data.
* "A server […] can get are your public profile and public posts, which are publicly accessible."
- Well, no. What it can get is anything you share with a user on that server, so any form of post whether public or only visible to the mentioned users (e.g. DM's). I know it's picky, but wording matters and "public" has a fairly established connotation for non-mastodevs.