Great Game!
Excellent mechanic with the spawn points, I loved it :)
The timing for throwing.. well, whatever. That's what the R button is for, after all.
The message at the end is very thoughtful, honestly I didn't expect anything like that, but I thought it was interesting. Of course, first time through I didn't expect it so I just killed myself going for the coin... Assumed the respawn was somewhere off screen :) Also, the second to last level really made me realize how awesome the moving spawn mechanic was, when you randomly decided to take it away from me.
No real complaints or suggestions other than the throw mechanic. Maybe set it up so that instead of using up-throw to throw upwards, give a different key to throw upwards(W maybe?) thus reducing the number of simultaneous key presses required.