This is a really cool concept. I feel there is something to this idea of 'drops', but hard to describe. It is like a delivered time capsule.

I like the use case of people making a prediction 'drop', then have it show right after a specific time. That and possibly long messages to be opened on a significant date or time.

Definitely need to work on putting a value prop up and letting people know what they could possibly do with the app.

edit: just saw this on TC http://techcrunch.com/2014/08/05/drop-the-location-based-mes...