The question Why do people think functional programming will catch on? has disappeared completely from SO. Going there gives me a 404 error (and I have 20k+). What gives?
Migrated questions like What real life bad habits has programming given you? will take me to the new site, and it shows me a 404 on the new site since apparently it's been deleted from there as well and I don't have 10k on Programmers. But at least I know it's been migrated.