Twitter's staff pic on their recruitment page shows a lot of people who have left too.
They should put big red X's over each member that left, Battle Royale style.
Yes -- either they want to keep his pic there, to give the false impression that they're still benefiting from his expertise! Or even worse, now that Dave has left, there's no one in the company technically capable enough to update their home page.
Either way, this is serious! I'm going to start on my "breaking news" blog post now!
Or, you know, they could be busy with work that's actually important.