Nice! Great idea!

However, your quote on the front page makes me think: Will osod.im be here years from now?

I love the concept, but I would hate to loose it if I did choose to start writing a sentence a day, describing what I've done or thought about. If only to look back at it once myself or potential children. Have you considered 'open sourcing' it? Making it self-hosting.

It would also be neat to have a bit more settings, like whether or not stuff should be public, etc.

But I read that you hacked this in one night and might not have thought about all this (but I hope you do now!)