This does an excellent job in capturing the frantic feeling of a missing persons case. The art is very strong, and I love all the ARG aspects. One thing that majorly affected my playthrough is that I don't have a Facebook, and therefore had a large portion of the game closed to me (you can't see friends, check-ins, etc without an account). Though on that note, it's worth mentioning that nobody I know has a Facebook either, so it may be a larger percentage of the player base than you expect who would run into the same issue. I think one thing I'd also look into is that the clock felt like it ran down too quickly- it seemed like every literal mouse click was progressing it. Maybe instead, if when you opened an app it would tick up by 10 minutes, but not tick up further until you switched apps. Or something like that? Either way, I thought this was a really affecting experience that had a lot to say. I got two bad endings, but would be interested to find out more about the other possibilities. Great job!
I actually recorded my playthrough. If you want to see my impressions as I played, you can see it below. Hope that can be useful!