YouTube uses letters, numbers, and underscores in their eleven-character video IDs. This means they have enough potential IDs to support as many as 62,050,608,388,552,823,487 videos. That’s sixty-two quintillion videos (or trillion outside of America). Even considering something like one percent of those aren’t copyrighted, that’s still a lot of possible time to waste. Hopefully their new ads (792 words) won’t help to prevent them from ever reaching this potential.