Hacker News Reader

You can use Shift+Delete on an entry to remove it from the autocomplete list.

Not easily on a Mocbook Pro, which doesn't have a Delete key. Shift+Backspace doesn't work.

Really? I have a five-year-old MBP with a key labeled "Delete" (although it really seems to be "Backspace").

On MacBooks the combination of Fn+Backspace mimics Delete. So Shift+Fn+Backspace to remove a suggestion.