X (Twitter) guides
X changed a lot and documented very little of it. These guides cover the current behaviour, with the date we last checked printed on every page.
Last verified:
X character limits explained
The character limits on X by account type, what actually counts toward them — links, media, handles, non-Latin scripts — and why a thread is usually the better answer than a very long post.
Last verified: 2026-07-28
How to control who can reply on X
How reply controls work on X: the options available, how to set them in the composer or change them after posting, what happens to replies that already exist, and what restricted accounts can still do.
Last verified: 2026-07-28
How bookmarks work on X
What bookmarks on X are, how they differ from likes, whether the author is notified, whether the bookmark count is public, and how to save and organise posts you want to find again.
Last verified: 2026-07-28