"10 Seconds" needs addition - even if site opens in 0.1 second and shows cookie management options, in my mind it will take 10 seconds to get rid of it and I close the site. So it's often not about actual speed, but speed "from my experiance".
Only usable for entries in English, as title and subtitle fields uses font with no non-English characters. There are bugs and then there are bugs that render service unusable for most part of world.
Forget about Facebook, it takes weeks before someone responds to game request and response is usually "Deny request and block app" in best cases and "Unfriend" in others.
Has some consistency issues and flaws in design. Not perfect typeface, windows logo is smaller than office/surface logo, looks as stranger in set, metro/xbox has no logo, logo/ui relations could be better across the board. But. For 3 days project, good.