I don't even want to know the nightmare of programming that. Anyway, fast players would just start a new user ID after a while so they could set records again. With 40,000+ quotes, you have to play a lot to get repeats. And not all of us remember having solved one before, when we made comments on the quote and clearly have. I know for a fact there is one quote out there I'm dying to get again so I can comment; I wasn't logged in the first time. It's been about 5 years.
La, la, la - la - la - la....