Now that you have such a huge dataset, do you have any plans to make use of it in interesting ways? For example an opening popularity browser, or a puzzle generator?
This doesn't require a huge database, but as interesting use, the games are used to generate chess-themed CAPTCHAs, example here: http://en.lichess.org/signup
Sad to report, that most computers are a lot better at solving that CAPTCHA than I am.
They already use it for a puzzle generator which ranks their own puzzles against players with endgames mined from their games.
They do really cool stuff with with data, including puzzle generation. lichess is worth checking out.