Something that I really appreciate after moving here from Reddit: I can finally edit titles!
No more having to delete and re-post when I notice a typo. No more having to endure the embarrassment when I don’t notice one until after the comments have already started.
It’s a small thing, but a relief nevertheless.
Yes, that’s pretty common. Reddit URLs contain post titles as well, but they can be deleted without breaking navigation. I expect they’re added just for the convenience of human readers.